Who is stronger Sora or riku

It would appear that Sora is, indeed, the stronger of the two.
Despite protest that Riku is more 'muscled' then Sora, one must note that Sora has shown himself to be able to cut through entire buildings duing his fight with Xemnas, be able to use powerful types of magic, defeat powerful foes such as Cloud, Tifa, Yuffie, and Leon on his own, along with Sephiroth singlehandedly, defeat incredibly powerful opponents, even gods for instance (Hades and Chernabog), and many other strange, thought-impossible, and incredible feats throughout his adventures.
My guess is that, while it is unlikely that they will fight with the intent to kill the other after the KH2 ending, Sora would the victor over the two. 'Bigger muscles' don't mean squat in anime, manga, or Japanese games.
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I think that they both are pretty equal. Sora is the keyblade wielder, but that is only because he chose light over darkness. But Riku couldn't beat Roxas without Ansem, and Roxas is part Sora. In Kingdom Hearts 1 when they were kids Riku always won, but Sora gained so much power during his journeys as well as Riku. I'm going with Sora.




I'm a different person from the one who first submitted the above answer, but I think Riku is stronger than Sora. In Kingdom Hearts CoM (Chain of Memories) Riku's jump is higher, he is faster, and he defeats his enemies more easily than Sora. Yes, Sora has gotten stronger throughout the course of the games, but I think that Riku is the stronger one.
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KHCM show that in there default form,Riku is far stronger than Sora.Roxas after a year of of fighting in OXIII was stronger than Riku. Since Roxas combined with Sora afterwards...you can guess that Sora now have Roxas abilities as well. With that Sora is decisively stronger than Riku