I've put together a few builds for friends which were ordered with unspecified, random tops, three flames that I recall and one quilt. I don't have any pictures of them and a couple I haven't seen in a while but IIRC they were all around what I'd consider AA. Warmoth aren't going to hand you a perfectly-mirrored AAAAA piece for 'free' (does it bother anyone else that we rate wood figuring on an A-AAAAA scale and not E-A? or 1-5? Just me? Huh) but they're fine. FWIW I've yet to see any mass producer using more than AA flame these days, anything better has become rarer and rarer and now carries a bigger premium than ever before. Even the Gibson Custom Shop, who still have the biggest reserve of flame maple of anyone, have switched to mostly using AAA pieces on non-limited editions.
The main thing to watch for is the orientation. One of my friends was really disappointed that his body came in with the wood arranged with the figuring making a slight neck-facing '^' kind of pattern when he likes figuring to be in a 'v', pointing towards the rear. That made me think twice about my own orders because I'm the opposite way, I want flame figuring to always be making a very slight point towards the neck and I can't stand the look of it pointing downwards or just straight across totally horizontal. I ended up buying that body off him (though have since sold it on again) and he ordered a second one, that time picking out a specific top. Given that experience I myself have also decided I won't be ordering any flame tops without choosing a particular piece or getting it off the showcase.