Some players can get u loads of goals given the right service; they vary in quality from Bent, Inzaghi, to Van Nistelrooy, Gomez, Dzeko etc
There are others than can get u goals AND make the team play better: they also vary in quality from Suarez to Henry, (Brazilian) Ronaldo, Messi etc Players of this ilk are generally more highly rated(cost more money to buy them). We are more in need of these sort of players.