We surely need about ten competitive matches before we can judge him.
I could find hours and hours of footage where Lukaku did absolutely nothing yet he was our best striker since I was a baby.
If that is Rooney not fully fit (as the rest of the squad were also not fully fit surely we should afford him the same courtesy?), with a lack of match sharpness, the first time he's actually played competitively with most of his team mates most of whom he only even met about two weeks ago, a lot of whom have only met each other this month and he still showed signs of slick link up play and a huge desire to win I'm alright with that as a start.
Once he's match fit and has scored his first goal back he'll settle and once he's not the focal point of the attack and has Sandro and Klaasen making boss runs all over the place he'll be boss.