The one I hear quite often is "rebels have no counter to that" which always tickles me because rebels have so many ways to counter everything.
This week I took vessery and three basic tie advanced with AC, I faced a yv666 and two y-wings set up as warthogs.
By turn three the yv666 was dust and I'd lost a few shields, by turn six I'd wiped out his fleet 100-0.
First comment made was AC are too good and there's no good counter advanced using them.
So what do your mates say when taken by surprise?