I just destroyed Spanner (top 15)
What happened was I had whole map, just started to spam more Mech ones, he comes in with his own mech ones, i barely kill all of them with 50% health, I get some tanks, and spam some more mech ones (I had about 600 AP), and he comes in with his mother ship, and I kill him with my 15 mech ones in 10 seconds.