Who Is Stronger Giratina Palkia Or Dialga?

Yupper the crazy astronaut is very wrong about the situation, Dialga will win due to his resistance to dragon and water, his typing does that.

Well Dialga was beastly in Platinum. I would have to go with Dialga, no one in my game could beat me

Dialga is stronger because water attacks are not super effective dragon. Second dragon type moves are normal to him. Third shadow force is not very effective to steel. And thats my opinion.

Giratina is stronger when hes in the other dimension in the normal dimension he is weak.hes only a shadow

Giratina would win

Technically saying, if these three were transported to Gen6, with the introduction of Fairy types, Dialga will become the best among them. Since Fairy types are good against Dragon, and Steel good against Fairy, Fairy-types will only do neutral damage to Dialga(while 2x against the others), and Dialga has some way to strike back.

Well if it was up to me I'd say it would be a tie. They're all so strong that each of them would be too weak to battle. So obviously none of them are stronger then the other. And in the first place why would they battle at random?

In Pokemon Diamond/Pearl, Giratina wins. Giratina is made stronger in the game.
In Platinum, Palkia wins. Dialga and Palkia are the same level (and stronger then Giratina), but Dialga is Steel & Dragon, but Palkia is Water & Dragon. Dragon is even. Water beats Steel. So Palkia wins.
In all the odds are:
Giratina-50% chance of winning
Palkia- 40% chance of winning
Dialga-10% chance of winning
How did I get these percentages, let's just say I know someone in the Pokemon Company
*wink* *wink*
Hope this helped!

Giratina because I beat palkia and dialga with giratina using shadow force.

Giratina is way stronger than palkia and dialga evan together

Palkia cause he can control or manipulate space!
He can teleport , change size , control gravity , send meteors , cause awesome waterbending (cause his space control ability can distort any matter) , turn anything to digital matter or warp spaces!
He can confuse or hallucinate those dragon brothers of him!

Giritina

I say palkia

Both dialga and palkia and giratina

Palkia is. Better typing cause hes only weak to dragon. Plus palkia and dialga have the same stats except for defense and speed. Palkia is faster, slightly. While dialga has better defense, again slightly. In a lvl 100 battle palkia would easliy win with one aura sphere. The only reason anyone would ever say dialga is better is because roar of time has a 150 base power. But most ppl don't read because Palkia's spatial rend does 1oo plus a 50 percent crit rate = 200, even better it has no recharge. Dialga is inferior in almost every way. Plus that thing looks like a donkey. Giratina on the other hand... To be honest origin form isn't all that great when you compare it with palkia and even dialga. Giritina's  altered form can soak up lots of hits and has blissey like health. ( around 700ish when lvl 100) origin form looks the coolest to me hands down. But its stats aren't that great. I'd have to say sweepers like palkia and dialga are superior to pseudo sweepers such as giritina origin. But to tell you the truth dialga just sucks compared to a walling giritina altered form and offensively built palkia. And between those two I'd still have to go with palkia. To sum it up

If you want an idiot donkey-like wuss with so-so stats compared to the others then pick dialga
If you want a cool looking draconian beast of a Pokemon that steem rolls practically everything, pick palkia
if you want a all around uber pick giratina origin form.
If you want a defensive behemoth pick giratina

First of all for the third question: I think that you wrong because you said you beat them both...you were probbaly saying truth but you were not all on same lvl odviously your giritina was hiyer lvl.
Now I haved been thinkin for four days so I had saved it then chose one for a day chose another for a day then another and today on the 4thi thought a lot
dialga is good but has an advantage of roar of time in the darkrai 1 like arcues has roar of time but if you have seen arceus and the jewel of life giritina... Well this brings me to somewon ho said that garitina is weaker out its dimension but in arceus and the jewel of life it was out its dimension and would have killed dialga if it wernet for sheena so that puts dialga out.
Now palkia vs giritina very hard because I seen palkia do strong clever and amazing things but giritina has very special things it can do so I know who is best.  Now if Palkia would simply fight with garitnagaritina would hurt palkia but palkia would simly grow bigga and create a like space focefield around garitina (I saw that in arceus and the jewel of life) around it for protection and when its ready let it go and do total destruction to giritina.
But some people might think garitina would easily break out but arcues as we know is the strongest had a bit of trouble breaking out than managed to as that means giritina could probbaly not break out. I coyuuld sit here and say there all wonderfull so I don't no hos best but I'm not going to I'm going to say that..... IT IS DEFANATLY PALKIA!

In the movies giratina is stronger but I say dialga is cause he is water-dragon and ice can;t really affect him like the others so the only way to get rid of him is with dragon..and shadow force would not affect them, Palkia and Dialga, for the are steel and a water not ghost or psy...

Do you ever wonder why palkia is easier to train in the games it is because it is weaker and dialga is harder.
It is also because dialga is stronger and would win easily.
I once battled my friend with my lv.64 dialga and smashed his mewtwo,ho-oh,lugia and deoxys
I also beated the league with my dialga too