League of Legends Diamond 1 Vayne Mechanics

During champselect the guy was pretty desperate for a win since he was about to drop then he plays like this. I had told the guy after that slip up that just because vayne is up doesn't mean he has to play her. He then told me that he's good w/vayne and I went on lolking to check his record w/vayne. The guy has less wins than loses w/vayne...