1st off the fight with NC,logan and colossus against OR was explained...
OR was shown to have bn severely weaken he had bn cut open repeatedly just to see him heal.... OR wasnt at full strength in that arc especially when OR said he was feeling a lil better after training a lil bit from colossus....
their last fights with logan were utter pis he had apparently inexplicably become weaker and less durable then he once was.. being injured by a regular spike iron door and the chains was ridicules.... logan use to have to punch him as hard as he could with his claws just to get shallow cuts back in the day...