You're not missing an update. When the iPad first came out, there weren't enough iPad apps to justify category top lists. Apple's never bothered adding game subcategories, and at this point I doubt they ever will. On the plus side, search is easier to access on the iPad because of the bigger onscreen keyboard.
Originally Posted by Ashenor
I like how my itouch breaks games down into categories, my iPad 2 does not, am I missing a update or something?