Rufus's dive kick was nerfed from being +5 on block to -4 on block and the hitbox is worse, it's now unsafe and hard to cross up with, and ruined his approach turning him into another poke character.
As much as people hate Rufus and his dive kick he's the only character that reliably kills his opponents in SFxT instead of time out.
Ryu's is just way too good and hard to open in this game. His moves have hige hitboxes (IE standing jab hits crouching opponents, unlike most games) his donkey kick is safe and a major pressure tool, one of the best fireballs, shoryuken leads to easy high damage tag combos and his sweep into fireball/donkey kick is one of the best baits in the game.
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http://i43.photobucket.com/albums/e373/Gaiash/KumaVsZangief.jpg
LOL!!!! I hope that's a joke....names don't get more n00bish than that