Cesc was a different animal. He'd control the tempo and pace of a game like Pirlo and Xavi but could also bang in goals and assists.
I don't see Ozil developing into that Fabregas role. I see him more as a Pires. The way he floats all over the pitch and looking at his goal, I wouldn't be surprised if Wenger tries him out wide. But if he doesn't he will always find space in the wide areas.