I played 4-4-2 he used 4-3W-1-1. As for tactics itayfranko had already shown that formations count for nothing on another thread a few weeks ago.
If your theory on match ratings Is correct then losing 6-1 you'd think alot of my players were outplayed but my GK and 4 defenders all got a 7 I would expect them to be getting 5's.
Freak results happen but to lose 6-1 at home to a team nearly 10* worse than me?