I'm sorry, i didnt get to go online that much during the BOTA days and I wasnt able to bring this up. I was so surprised that future jean was able to take on a phoenix avatar. It was even funny that the Phoenix force was even calling her while it was in quentin. But I dont understand how one's power could overload. same thing happened in x-men anime. they made jean explode. sad
BotA Jean had power, but lacked control, or at least that's the way I saw it, since she had to use the Xorn's suit and everything, I guess that her body just couldn't take the power of the Phoenix without the training and experience regular 616 Jean had.
And Jean did overpower a Phoenix Avatar before, she took the Force away from Emma during Endsong, while she had none, it's kind of the same here. Since Jean is the Phoenix, she can always do whatever she pleases with it.
I don't think she was nearly as powerful as Quintin was, but she was able to exploit what appears to be the usual psychological baggage every host seems to get that turns them into glass cannons.
That's probably it, but still Quentin was an even worst Avatar than Endsong Emma who had no real feats to speak of. Each one of the Phoenix Five with no more than 1/5 of the Force showed to be better hosts than Quentin, and unlike him, they were never meant to be Phoenix Avatars.
One more of BotA screw ups I guess.
Of course, Rachel is, in my opinion, one of the best Avatars, but I wasn't really talking about training though, just that, unlike the Phoenix 5, Quentin was supposed to become the Phoenix at one point or another (or at least I remember something like that), not that he had any special trainging.
Except for that time she was gonna destroy all that is just to fight the Beyonder and when the small echo of the Phoenix was starting to make her grow darker. The real Jean Grey never went mad with power, Dark Phoenix was the Phoenix Force, it was Jean Grey that prevented it's madness.