I help keep together a topic on Sega forums with the top times and scores for each act using both Sonic and Super Sonic (and TA and SA). I got to the Special Stages section and as I was updating it, I noticed the top times were all from the iOS devices. I decided to look up one of the speedruns done on an iPhone and I think there may need to be a rule change involving iOS devices and Special Stages.
http://www.youtube.com/watch?v=BKbPZrbnAzU^ That's the video.
The problem is that iOS devices give you free rotation with Sonic as opposed to the XBox, Wii, and Playstation 3 where you can rotate Sonic at only a fixed speed. This clearly gives iOS device users quite an advantage (as you can see at 0:06 in the video...the 3 platform versions cannot rotate at that speed).
I don't think there are any Special Stage times or scores submitted to the charts yet from an iOS device but I think this is something worth addressing.
For comparison:
http://www.youtube.com/watch?v=a5R_7TXJXiEIt's not the same stage but you can clearly see what the max speed for rotation is.
As it stands, only Casino Street 2 and Lost Labyrinth 2 time/score submissions are banned from an iOS device. I think it should be extended to Special Stages as well.
If this seems like a silly thing to ban iOS submissions from, then I apologize XD It seems to give an advantage among most others so I thought it was at least worth mentioning.