Giving up after just 2 weeks?
He's barely taken any of your territory, though you did drop the ball with Ulm.
Look, I'm losing units left and right as well, mostly useless scouts and commanders, but mages too, to nearly endless amounts of mindhunts. That's what happens when he has the nexus, and the chalice to heal those feebleminded yogi's everytime he stumbles on one of my astral mages. He's also teleporting tons of stuff with tons of astral pearls. My strategy is all about using a lot less resources than he is, and I'm feel I'm certainly succeeding in that, though I'm still building up patiently in preparation of overwhelming power. All you have to do is hold on.
Playing against a more powerful (as well as skilled) opponent has been a very great experience, and very educational. Don't give up just yet. I'll leave you with this quote, "You can only become smarter by playing against smarter opponents."