yeh I didn't like the controls, both iOS and Android.... but that's actually my impression for lot's of games like this, graphics etc and all that can be great, but the controls are generally a let down on both OS's. Android felt slightly better but only b/c of the bigger screen for more room, not necessarily better control. Just the limiting factor (on screen controls) with these types of games being played crammed on a phone screen with so much action going on.
Brothers In Arms drove me nutz on the iPhone, game is great, but it's the controls that are lackluster on a 3.5" screen. On the GSII it's a little easier but again not b/c of better controls, just more screen real estate to use.
Not even sure why I download and pay (paid) for a lot of these games lol, as I barely played them. The only game I play really is Gun Bro's, which go figure has great on screen controls for both OS's and is just one of the most intense and fun games.