I like C2's awesome development system - it's really fast and direct. But, unfortunately, the Android performance is not good enough for me - even with my modest test setup levels. I'm getting 9-15 FPS on a level with one character and some blue balls.
I'm going to move over to either Unity or Unreal. The project I'm working on now is important to me and I really want to focus on making an awesome, aesthetic game. C2 doesn't have the performance capabilities on neither my phone (Galaxy S4) or tablet that I own to even handle very little.
Unless you're making a very pixelated game, I suggest you look at other cross-platform game editors for mobile performance.