Ok I should ave been a little clearer here, my bad.
It's not so much testing as evaluating.
And i'm only interested in the AI evaluation.
I changed the AIs to be like so:
Easy -> Resource Hoarder - no offensive units, just farms all day. Designed to be boring and unlike a normal human player.
Normal -> Left the same as the GAE normal AI when I downloaded it.
Ultra -> Overly Aggressive, will spawn lots of units and send them straight to you.
Mega -> Overly Defensive, spawns offensive units, but stays in their base and defends it.
I used the GAE as a base for this, so that's why there may be a few GAE bugs in there from the version I downloaded, please ignore these
I hope this clears up some confusion.