Originally posted by TheLordofMurderSpeculation. Most of these battles have characters stop and speak dialogue so you inserting your fantasies have no bearing here. Thanos prepped for Tyrant and the fight was much shorter while he acknowledged he might lose his life had the fight continued whereas he never doubted himself for an instant in a longer fight against Odin. Proof's in the pudding.
He didnt look better against Odin; Odin had him in a position where he could have run Gungnir through the back of his neck and killed him...In addition, Thanos was unable to do anything significant to Odin at all...