The question is not who's better, its who's performing better right now. and that is Oscar. As much as I would love to see Mata play, Oscar has been our best player so far and he's doing a great job as a #10 so untill Mata comes in and does better, Oscar should keep starting in the #10 role. The problem though is that Mata needs more than like 40 min to prove himself. He's not the flashy kind of player, he needs a full match and in that full match he'll make a couple of key-passes. Oscar is different though, he dribbles around, he tries to get shots on etc. So that way it looks like he's doing more than Mata, when thats not what it actually is. they're just 2 different players.