@SirMustapha: I think the AI is actually quite good. I mean, I know for a fact that if I was battling manually, I would destroy the lowest level guy first. They act a lot like players, and I think it is a good challenge to level up your low-level guys.
If your computer is lagging, right click, go down to quality, and select at least medium. The default setting is high, which is why this game can lag so badly.
The time I have posted this, I have not even started the game. But I can already tell that it is going to be good, because the update news was chock full of updates. You have got to love a dev who constantly updates :D