Nah Hinata's all sweet and innocent, you don't wanna ruin that. Sakura on the other hand is a pretty big bitch towards everyone, it'd be much easier to go to town on her, give her what she deserves! She'd probably be all like "Narutoooooooooooooooo ;_;, I'm still not strong enough", but you'd be all like DGAF SUCKURA, LET'S GET IT!
tl;dr Sakura, ez