Firstly, gameplay on the iphone would be awful.. trying to press jump at the right time, on a touchscreen.. it just wouldnt work that well..
Secondly, the icon is a poor choice for the game on iPhone.
Thirdly, the icon has that reflective overlay on it, which is present on webapps and homescreen bookmarks. I'd have thought if it was an actual port of AO/AE to iPhone then they'd use better icon graphics.
