I agree that the match up makes a lot of sense. I think people are letting his popularity influence them a bit too much, although I haven't read much comments ITT. I think that's just a general trend regarding how fans view fighters. They want him to fight a more established name so he can climb the ranks faster, which is understandable, IMO. But that's just impatience on their part, IMO. If he is really that good (which I personally think he is) he'll get to the top eventually and, of course the point you were touching on, if he's that good you should favor him to win.
But then seeing the poll I think it's more impatience, than it really is that they think he will lose. Because if they were really scared of that match up, they would want him to not fight Turner. Just like Turner fans would not want him to fight BSD, if they thought Turner would likely lose to him.