Didier Drogba played 41 competitive matches his first season. He had 26 games in the Premier League, netting 10 times as well as getting 5 assists. 5 goals in 9 games in Europe as well. I would not exactly call that poor, and I doubt Benteke will (ever) have such a good season from the first signs on him. Not bigging him down of course, but Didier Drodba when he came here was a great signing and he then turned out to be world-class. Thus, Chelsea paid over 20M for him I think and he ended his career there by scoring the winner in the Champions League.
Drogba looked shite when he first came, I don't care about the full season stats, certainly at the start of the season and was considered a waste of money by a lot of Chelsea fans.
I'm not saying that Benteke will be anything like him, I was just saying that you may as well compare him with Drogba as compare him with Carlton Cole as people were doing.
Both are ridiculous comparisons after so little time in English football.