Under Martin - and it was the same with him at MK Dons - they actually play like you'd expect a kids team to be coached to play if they were instructed like they are mostly on the continent, where results don't matter and you encourage the children to pass the ball even if they make mistakes in the hope that it will be ingrained in them eventually.
I can't see how that translates to professional football unless you've got exceptional players to begin with. Manchester City don't concede many goals so it works for them, but surely someone has come up with how many Swansea have conceded (or what their Xg is) from simply faffing around at the back compared with how many chances it's created for them?
As football has been data driven for some time now that should be a very easy equation.
It also vindicates the much maligned 80s FA Coach Charles Hughes who always said that the best way to goal is to win the ball as high up the pitch as possible, in other words the high press, which is so effective against Swansea. Their fan was right, they have the "risk-reward" profile of a mug punter.