Rooney of course was playing for and scoring for England at this age, so yes he’s no Rooney. Arguably , based upon U23s playing time last season and selection for England u18s he’s not even our best 18 year old attacker, that’s Anthony Gordon. But then Gordon hasn’t got his own thread on GOT so I may be wrong.
What is without dispute is that , after an ordinary 1st year at u18s , his progress last season was startling . Youngsters don’t score as many goals as that at u18 because they are promoted rapidly when they show talent e.g. Marcus Rashford, so we’ve still to see if his blistering pace and ability to score with each foot can be maintained at U23s level against bigger, stronger opponents.
Rooney was a natural who’d made it by 18, Simms is very much a work in progress who requires a lot of work on certain areas of his game like hold up play, playing with your back to goal . In a way our coaches can add much more to his game than they could to Rooney’s so it’s both exciting and intriguing what the next few seasons hold for Simms.