TBH I can see the same kinda result as last time, though it's possible Lemieux would show more fortitude and go 12 rounds. Lemieux might seem to have improved, but he's still fought no-one of significance since Rubio (and to a much lesser extent Alcine). His blasting out of the chinny Guerrero shouldn't have come as a huge surprise and really told us little we didn't already know.
Rubio is still better, I like Lemieux but whats he done that suggests major improvement Lemieux did dominate the fight the first time and could take him out but to me its unlikely
Rubio,it would be perhaps a little tougher but the end result will be the same.David is fun to watch but very limited skill set and endurance wise.