I love this game. I remember playing this on the PC years ago, then the Xbox version later down the road. Still a great game and shows why 9mm by Gameloft is a complete and utter trash of a game. Controls are fine once I changed a couple of things like tap to shoot and inverted, still not as smooth as the Xbox or PC versions, but playing this on an iPad 2 on the road is a blast.
By the way, this game is free on freemyapps.com for those looking to get it, which is how I got it. It's a legit site in which they even worked with Apple to have Apple's apps on there