Yeah the computer AI always seems to be the stronger one when you bump into eachother. I never am able to push them to the side to grab a pickup. The booster problem you have sounds familiar too, but sometimes it happens the other way round too, and they bump into you giving a nice free boost.I loves it, but some tracks are immensely bad and the bots seem to really like to block me up everytime I try to overtake them and/or use the booster pickup(the one you pickup and use like a weapon).