Take a look at Channing Frye. Skill-wise, he can block shots, rebound, run the floor, shoot the mid-range jumper, and he had a baby jump hook that he favored in college. Skill-wise, one could make an argument that he has a better all around game than Curry.
But is he more efficient than Curry? Did he have an impact on the game as much as Curry did in terms of being one of the main focuses of the opposing defense? LaMarcus is talented and a possible jack of more trades, but he was not better than Eddy Curry last year. His rookie season numbers aren't even better than Frye's rookie year.
Skill-wise, Kwame Brown can probably do everything that Dwight Howard can do. The skills can be equal or greater, but what matters is who utilizes their skills the most.
LaMarcus is still very young, and who knows, maybe he can put up better numbers than Eddy someday. Nobody knows for sure. However, I think Eddy deserves a bit more credit than comparing him to a guy who is still trying to break out.