In a 5 round fight I have zero doubt Rory would solve his south paw stance. I also see Rory completely negating his judo and ground game.
Rory is also under estimated for his resilience , in how tough he is to put away. He survived a brutal onslaught vs Lawler, and came back to take control at the end of the fight. As a 20 year old vs Condit, Condit had most of the 3rd round to go to town on him and he took all of it, with the fight only being stopped with less than 10 seconds remaining.
Macdonald continues to mature as a fighter, and I see him having all the answers to handle Lombard.