the splash in aigis is 100%, meaning for every additional unit that is splashed, the dmg increases 100%.
In crazy maps like IB (and there will be more harder maps coming very soon), splash makes a difference.
http://aigis.gcwiki.info/?%BF%C0%C8%...E9%A5%CB%A5%A2
If you don't like her, feel free to use soma instead and send her my way. =D