A premier league match is tough. If they don't train hard they are not succeeding when the time comes. That goes for any athlete so I think you are being a bit daft. It is so much more demanding now.By how they play in actual matches? I think watching Walcott struggle to impact games and Bernard scuff 70% of his shots in actual matches is more telling than what they do under no pressure. At some point that stuff has to matter.
The days of going clubbing, having a fag an winning the game are history.