The wage bill is a big deal, I won't argue but the thing is Wigan finish about where you'd expect them to be in terms of wages. They pay about the 16th most in the league and finish about 16th. So their players are about as good as they think they are.
We pay about the 10th and finish 7th. We get more out of our players then their agents think their worth. That is because we have a good manager and wigan don't.
That makes no sense. Moyes excels at getting value for money on players, that doesn't mean Martinez isn't a good manager because he doesn't do the same.
Martinez has spent barely anything while having his best players sold from under him. I fail to see how he's a bad manager for keeping them up consistently when other teams have spent more and gone down.
Wolves spent £30m net in the three seasons previous to being relegated, for example.