So you don't think the auction makes West at least twice as likely to hold the ♥Q than East? I do, I think it's fairly close, and I'm open to being told I'm wrong. If I had KQxx(x) of my partner's suit and nothing else, then I would probably bid 6♠ at favorable. Also some people might not preempt on JTxxxxx Qxx x xx because the hand is triply flawed (bad suit, Qxx hearts, low tricks).