What would cause this weird bearing wear?

Well, yes if they are paying attention. to test it first take all cap's and bearing's out on all of them except the ends leave these on and torqued down. set up a dial indicator with a solid base on each crank journal(center journal's). turn the crank and observe the readings on each one. after that remove the cap's and bearing's off of the ends and install the bearing's and cap's on the crank's center journal's and torque them to spec and check the crank end's out of round. with that many cap's missing during the test I would go to .008" out on each one. this is only a get close test. if it is out the crank need's to go back to the crank shop.