If you're having trouble with a Vasari player... well... actually, what does his fleet look like/is composed of?
(^) Koda0
His fleet contained a mix of all his available ships. 5 or 6 overseers, 4 subverters, at least 10 assailants, 6 skirmishers, 10-12 sentinels, and 5 transporters with nothing but fighters.
Now, a huge part of the problem, I realize, is that I let him outnumber me. I had about 6 aerias, 12 illums, 10-12 defense vessels, 4 guardians, 6 disciples, and a halcyon. Also, thinking back, he'd hit the planet with a kostura so my repair bays were off.
I guess my big question though is, assuming that I had an even amount of ships, what can I do about how quickly he kills a cap? It only took about 10 seconds to kill it, and with the overseers it didn't seem like I killed any of his assailants.