Valentino Rossi stung by criticism that he is unable to do what Casey Stoner did last year with Ducati has said that his aim at the Japanese round of the MotoGP this weekend is to better Stoner’s performance of last year. ¬†Stoner did not go well in practice but rode well in the race last year and Rossi says that he wants to go faster than Stoner did last year even though it is not going to be easy.