People, people, people..
If what i seem to have read is correct, your assets carry on with you from fight to fight. Meaning that rushing may work really well in the first fight when you have no walls yet, but two hardcore players who, per se, both won their last game and have 100% hp stuff. Rushing is suicide in that case.
DoF is going to be whoever plays their card in the right circumstance. I camp in base, you rushed at start, you failed, my army is nearly intact, I build up for a minute or so and then come at your base. You're choice of cards just lost you the game.
**Cards is a metaphor, dont get all thinking this is a card game**