It's better than a touch screen, though the dPad is of the ****ty floaty variety. Anyways it is most definitely very easy to get an external keyboard attached to an android device... but people with iPad's can do that if they jailbreak, no? Would be cool if Stefan could add a way to detect whether movement is being caused by screen or physical input. It is possible for him to do something about it, but scriptwise there's nothing that could be done because the touch controls invoke the client in a way that tricks it into thinking physical buttons are being pressed. If Stefan added a way to detect the origin then maybe it could just be added to kick people out of mobile when physical keys are used.

Also I can't be certain, but do Android users get the speed boost iOS players get? While walking around(with 20fps, I just happened to have a script loaded to tell me as I was benchmarking some stuff before the Android release), I noticed someone walked past me at a faster speed. It was hard to tell because they were skipping a bit, but I definitely thought they were able to overtake and pass me. Would be nice if someone with both devices could test it out.