First, I agree that the blitzer is likely to win, but I dont see it as one sided as most of you seem to think.

Askthepizzaguy, you are talking about going against a pure turtler while modifying your blitz strategy to consider the human turtler. To that point, the turtler who modifies his strategy to compansate for a human blitzer against a pure blitzer would win as well. If your modifying your strategies to compansate for having a human player it's only a fair comparison if said turtler is also modifying his. At that point it's agresive expansionist against defensive expansionist, remember to be a fair comparison the two players would have to be equaly skilled, you've mastered attacking in sieges, your opponant has mastered defending them, you've mastered crossing bridges, your opponant has mastered defending them.

In short, true blitzer against true turtler, the blitzer would probably win 9 out of 10 times. True blitzer needs to keep expanding to keep his economy, one too many losses and he's done, thus the turtler wins one game.

Moderate blitzer against true turtler the blitzer wins every time.

Moderate turtler against true blitzer would likely be turtler 9 out of 10, the one time being you just couldnt stop him long enough.

However, in a human vs human it would be moderate blitzer against moderate turtler and it's anyone's game, though I'd say the blitzer has an edge.