Not entirely sure what world it is you live in... how has touchable computing not been a game-changer? Just look at all the iDevice apps out there, and how frequently and powerfully the UI decisions there have changed desktop applications.
My argument is that---regardless of those features' importance for pocket computing---they haven't changed the game for tablet devices. Tablet devices remain wedged in that space where they're too big for the pocket and too small for the lap or desk. If you're going out, take your phone; if you're staying in, you might as well use your laptop and get some work done.
Chump change.
I agree that this is too little information to say anything definitive about the future of the tablet market but it is definitely not enough information to conclude that the iPad is not a “game changer”. Many people would, based on the phenomenal success of the iPad alone, argue that it is most definitely a game changer. I’m not prepared to make that statement just yet but it seems pretty weird to me to conclude the exact opposite, at least at this point in time.