With all due respect, managing in International football and club football is vastly different. His club records is pretty average
I don't think he had much of an opportunity at club level. Fulham were decent under him, and fell away after he left.
he hasnt had over a 40% win percentage at any places he's managed (sorry, unless you count the 20 games he managed in the greek league).. and that includes wales. he's benefitting from a 'golden generation' of welsh players right now.