"Weaknesses: A bit naive tactically as he always looks to attack, he lacks the experience needed at the top level."
So that's Martinez' one weakness according to ESPN. Well I'd rather we actually try to WIN every game than play for the draw and then inevitably lose, and after all I like to be entertained watching footy, and our players are better than Wigan's by roughly 3000% defensively so I view it as a very positive thing.
You make out that players defensive ability is somehow inherent and not a result of hours of practice on the training pitch.
Coleman has improved as a defender by roughly 300% because Moyes and his coaches have put in the work.
The fact defenders seem to get worse under Martinez is not actually a positive.