It depends. I have 2 similar strikers in my main team that are low on scoring but my wingers are scoring like mad. Strikers mostly score 7's while my wingers get 8-9's. It wouldn't hurt to try a new striker if you have some tokens to spare. At this time strikers shouldn't be to expensive. This game is however way too unpredictable. I had a striker like yours in my first season with FK SA who did'n't score at all. The following two season he suddenly became the best player of my team.