It is a bizarre one isn't it?
The reason Mark Wilmots did so shite is because he couldn't get a team of very good individuals to play fluently as a team and as a unit, so that is what the next manager had excel on.
They picked quite possibly the WORST possible replacement, they will never play any differently at all for the time he is there.
I would be amazed if he even remains there for the world cup, as I doubt Belgium will even qualify with him in charge.