Football is a game of fine margins and it depends on who wins the tackles and the loose balls.
Bossing the game, determination, winning battles are phrases you have used Paul.
Cam B has these attributes, he will win 80% of the battles in midfield but unfortunately replace him with Macguane and he probably wins no more than 20%.
That is one of hell of a difference, effectively out of a midfield skirmish, if Cam plays we go forward 8 of 10 times, if Maguane the battles are not won and the opposition normally are attacking us.
Some of the games Maguane has started - Wycombe A, Accrington, Morecambe, Plymouth, Bristol Rovers * 2, Doncaster (we did win that one, but only just) QPR, Wigan * 2, Rotherham, and for a bit of balance Gillingham A but the Gills had zero bite. There are only 2 wins in those 12 games.