How is he better?
N'Zogbia carried Wigan for parts of last season and banged in 9 league goals and 8 assists in the process.
Enrique was decent but he wasn't outstanding, in fact I thought Tiote, Coloccini, Barton, Nolan and even Carroll done more over the season for us than he did.
It's easier to carry a team when you're a winger, but even though Enrique wasn't perfect he's still one of the best left backs in the league. I can imagine him at a top, top club whereas I don't think N'Zogbia will quite get there.