It was indeed his season,but this year seems to be a different season altogether,he hasn't score enough goals as he did last season,although the season has not gotten anywhere yet,but Barcelona's Lewandowski has began to show his goal scoring abilities in the Laliga,and might move ahead of Benzema in winning the goalden boot this year.
Benzema is not playing well this season. In fact he is not completely fit. If Benzema's fitness is right, he could have scored a lot of goals this season too. But he has missed many matches this season due to injuries. And still he is not fully recovered. Lewandowski is likely to be the top scorer this season. He has managed to adapt to the Barcelona team. And consistently performing very well in every match.