why would you use game maker for something of this scale? Its such a cluttered and shitty engine. This is like using a hammer and nails to bake a cake.
That doesn't hold, then. Unity is being optimized for 2D support, with a complete 2D physics engine and everything. Once Unity's 2D tools hit with 4.3, really, what reason would you have to develop in Game Maker, (Or other popular 2D engines), especially when most of them don't support console and Blackberry deployment?
lol, you can't even mobile/Wii/Wii U/Web Browser export; have fun with your "powerful" engine, lol