WOW...just thought of something....

[tenchi ryu]

Remember when sora was fighting roxas....and roxas was in the air and asked....Why did he choose you....then seeing sora near his friends, he says oh thats why...do you think roxas was talking about Ven? and after watching some kh2fm cutscenes....xemnas HAS to have some remnants of terra in him....cause xigbar says there are 2 "friends"

 

[Chaser]

It was a mistranslation. Roxas was meant to say "why did IT pick you?" It being the Keyblade

 

[Zulkir]

That's good insight, but as he said, that's a mistranslation.

He wonders why the keyblade chose Sora, then looks down at his "heart platform" and sees Riku and Kairi, Donald and Goofy, then realizes it's because of friendship bonds