Queller uses the old method of forming platoons, which is looking at the overall threat and then setting a minimum number of troops required before it will begin searching for a target. This leads to a more humanlike approach where you have small numbers of blobs moving around. Earlier this year the vanilla AI was changed from this method to one where it has no platoon minimums (sort of) and leans much more heavily on the neural net. This leads to a lot more map activity, with large numbers of smaller platoons moving around. Generally this makes for good raiding and poor army conservation. My experience has been it works really well against other AIs, but not so good against human players who build defences at expansion points. However, all Aggressive is is an over-confident Uber, which at this stage simply seems to be an inferior Uber that doesn't really add anything of value to the selections, hence my thinking of replacing it with Neural, which plays differently yet also potentially applies more pressure. EDIT: Aggressive can also open double-bot.