First of all, we have to analyze the players when they were at the same age.
He's got all of the attributes Fletcher had at that age, and a few more besides.
For one he has that physicality to bully other players. While nowhere near the technical level of a Scholes, he is still slightly better in possession than Fletcher was. He doesn't dilly-dally, and while he needs a touch, it's not at the pedantic levels of a young Fletch.
He's got more of a goal threat and he looks like he's only going to get better in that department. The way he took his second goal today was very classy indeed. I've never seen Fletcher strike the ball with the same ferocity (and accuracy) that McTom has.
While he has a similar role in the team, he's not limited in the way that Fletcher was. You can see him imposing himself on the opposition as an attacking threat, not just as someone to contain them.
I don't think we are talking world class here or anything, but he's clearly a stronger prospect than Fletcher was at the same age.