True true, I guess if Aizen got out, but the handled it well it COULD be ok, but I'd be very very sceptical, I thought Aizen's arc was one of the best in any manga, and now he's down, he should stay there. If they DO bring him back, they'd need to do something very special with it, not just "Hey I'm back! MASS HYPNOSIS!! oh Ichigo FGT'd again and I'm down :*("
Let me rephrase.. When I say Super Charged, I mean they've trained and worked so that they're just a level above, not like Hogyoku charged or anything, just they've spent a LOT of time to make themselves as badass as they can be.
Well.. That's the question really isn't it
why WOULD he say that? No one knows, but I'm guessing it's something to do with the Ishida bloodline, maybe they're 'pure' Quincy, or Quincy Royalty or something, and as such they're expected to be alot stronger than normal, maybe it was some forshadowing, to show that Ishida is going to come back from wherever he is now and do some awesome shiz.
Also I think Quincy are just human, but their work with Reishi has extended their lifespans and given them endurance and strength above that of a 'normal' human being.