One of the reasons I dislike annihilate in games when not playing vs the AI is that it means they can drag on. With the amount of map control we had it would have been a slow defeat.
I also messed up a bit and built the wrong unit a couple of times (2 grens 1 mortar not 3 mortars

)
I bottomed out on the score both times.

Don't much like urban environments though. Apparently an MG in a building cannot shoot at anything if there is a hedge next to the building, even when the building is taller than the hedge. But, sometimes I do well, and sometimes I don't.
Had fun running a few goliaths here and there though. Such a satisfying, meaty explosion.