Anichebe, Carlton Cole, Ricardo Fuller, Emile Heskey, Andy Carrol all have physical assets to draw on but are/were fairly poor premier league strikers. Rom is leagues above your classic physical brute premier league striker. Just look at his record. Whether its scruffy or not, he's a good finisher. Being a good striker is binary, you either know how to score regularly or you don't. Lukaku does, injuries and form will come and go like all players but fundamentally he is one one side of the divide with players like Rooney, Aguero, Van Persie, Dzeko, Costa, Sturridge. On the other side of the divide you have most other premier league first choice strikers who are just hoping they score rather than expecting it and will be considering it a good season if they get into double figures.