I don't think there is much of a difference in either of the engines performance wise. The 2.2 has more torque but and RLs at 8300. The 2.0 has a more aggressive vtec kick and revs to 9k. If you feel any difference in speed it most likely due to the regearing. I say read this thread where you will get more detailed facts about the ap1 and ap2 because there is not that big of a performance difference as people are leading you on to think.
http://www.s2ki.com/forums/index.php?showtopic=568555