Here's my totally wild-assed, non-scientific theory on why this is the case. Gameloft probably realized that their game wouldn't run well on many of the current tablets on the market running Honeycomb. The TF201 being the exception to the rule. However they probably also realized that the TF201 and other high end tablets wouldn't have HC for long so instead of focusing efforts on making the game compatible with HC, they put their efforts into making the game work on ICS instead. Knowing the future of gaming on tabs is with ICS and high powered devices like the TF201 they are working to optimize the game for such conditions.
Again this is pure speculation on my part. I will be proved either right or wrong next week when the TF201 is upgraded to ICS.