Neither were Henry, Adebayor or van Persie before Wenger made them better players.
Even if he doesn't get 30 goals in his first season in a new league and team, he and Podolski will get plenty between them as Arsenal as a team create and score plenty of goals.
They could be repulsed by scoring opportunities like Chamakh, but evidence so far shows players who enjoy scoring goals of varying types at a good level of competition.