Wilson had one terrible season but he also suffered from injuries and poor fitness. He's been good for years past and is a good back up for sure imo.It's an interesting point.
I don't think it necessarily works though, in a 38 game season you play everyone twice home and away. You can take a snapshot of a calendar year and point out the form in that period but its not really the same thing.
Calum Wilson played 35 games and bagged 7 league goals. Dele bagged 8 in only 25 games and had a pretty bad season by his standards.
Bottom line is, I'm not sure Brooks or Wilson are better than our current fringe players.