Well, i was on a 1 hr server, on Mesa, and bought myself a mammoth about 15 mins through. I was stuck in a mélée in the center, when our Powerplant was destroyed. Both teams structures were being destroyed, and i decded to build a mammoth to protect entrance. I stopped a couple APCs, but infantry came from the other way and killed all but our AGT. By that time, all they had left was their plant and their OoL.

Well, i brough my Mammoth to the center of the map, and shot at the Nod powerplant... I had c-4 dropped on my turret, several times, but i had acouple engies to fix me up after theey blew. I also had nukes aimed at me, i like feeling important enough to be nuked .
I stood shooting for a good 1/2 hour before match ended.

Moral of the Story: Continously shooting buildings can save your team.

Anyway: here's the scores ~1 min before the end of the game (1 hr, 0 cred start)