There's probably more to this story. Either he was CAL and wanted to take the junior CAL and not the senior UAL, or he was UAL and didn't want to take the senior CAL. Or the junior guy was a good freind of his.......Either way I can't fathom this kind of boneheadedness.

Or it could be the guy complaining never got a jumpseat form and gave up his seat in back that he was awarded for being senior. In that case he is a bonehead/DB for trying to bump a JSer when he had a seat in the back. If that's the case the CA made the correct call giving the JS to the JR pilot.

So many details missing.......