I don't think Reyes has the skill set to dethrone Jones, but I'd love to be wrong.
This is all just my opinion
Strictly talking skill set, you’re right, there’s no area where Reyes is technically more advanced than Jones.
Reyes won’t/can’t win by decision. His path to victory lies strictly through landing a bomb right on the button. Everyone has a button. Jones is the never ever at not getting hit clean on it, but it’s there.
Before every great upset there’s always talk of the challenger wont win. Look at Weidman - Silva, for example.
Everyone loses eventually, if they fight long enough. If Khabib fights 5 more years he will lose eventually (I think he’ll retire after a couple wins, but that’s another topic). Jones will lose eventually unless he retires early. It’s just a question of when/to whom.
I don’t think Reyes is the guy but it wouldn’t be the most shocking upset I’ve seen, at this point in Jones’ career anyway. I think Valentine losing would be a much bigger upset. At 205 you’re dealing with big guys who hit hard. Dom is at least more athletic than most 205ers.
again just my opinion
EDIT
but again, if I’m betting money, my money is on Jones this time. If he wins and fight Stipe next I think that will be the loss people are waiting for. I think Stipe knocks Jones out, at HW.