Suarez is one of a kind, i'll agree with that. As for the others, there's a difference between being clinical with not depending on others. Because a lot of the times i see Rooney, RVP and Aguero score, it's from good passes/crosses from their team-mates. It's like saying CR7 doesn't depend on anyone to get goals. We do lack creativity and play slow football, and everyone you mentioned there minus Suarez won't score the same amount of goals for us, as they are for their current teams.