This doesn't make any sense at all. Fat and running (stamina) isn't really a problem. Being sharp and sprints suffer due to weight and fat. That said the difference in him and Ronnie has a lot to do with Ronaldo being top conditioned all the time and never carrying any xtra weight through out his career Rooney has had weight issues most of his..
This is from 7 years ago..
https://www.google.is/amp/s/amp.the...v/05/wayne-rooney-nike-town-manchester-united
Ahh, the time he was sent to fat football camp.