I recall part of the plot device in Gasaraki (which I hated BTW - anybody want to buy the complete DVD set???) was how a one-man giant robot will soon make conventional AFV's obsolete. Of course, the writers used animagic as I have a hard time believing a company of M1 Abrams can be destroyed by a biped robot squad with much higher profiles. If anything, I'd see it as a draw with the only advantage to the robot of losing one guy if it gets destroyed as opposed to losing four guys in the Abrams.