even if he does have mjonlir its a stalemate, imo hulks constructs will be equal to mjonlir in a sense of durablitly and probably force, the physical & mental embodiment of pure rage wielding and red lantern ring is a force to be reckoned with, but thor is uber powerful too so a stalemate
IIRC the red ring provides upgrades similar to those of the other power rings i.e force field, flight, energy projections (mostly bloody plasma, but some have been able to form constructs). Like the other rings the red ring feeds off of emotion. Whereas the power of the green ring is dependent on the willpower of the user, the red ring is fueled by rage.
I'm going with Hulk on this one. Thor seemed to be too bi-polar in B&T to use the ring effectively. One moment he's pissed and tearing through Silver Surfer, Beta Ray Bill, and the IW, the next he's whining to Valkyrie because just got beatdown and feels butt hurt that his daddy didn't love him enough. Hulk is just pure rage, no other emotions whatsoever.