You just sucked. I will conveniently not mention that I wasn't able to defeat you 1-on-1 so I attacked your teammates who coincidentally both died in the first 10 seconds despite that in a previous match you were living for long against being mobbed. I will also not look at your team's scores and claim you were the stinker when a quick look would have shown me that you clearly outscored your teammates who didn't even do anything but die in the first 10 seconds. --- Master Knight DH at your service. http://www.youtube.com/user/MasterKnightDH
But in Advance Wars, you're supposed to destroy the enemy army or capture their HQ. Clearly this has balancing issues.
But if you are kiting with artillery then you won't be able to use melee attacks against Tanks with Meta Knight, defeating the point of defense when playing the last level of Kirby and the Amazing Mirror. The point is that if you use such a tactic you are coward and a Darwinist.