Alonso has done the same for Hamilton. Said that Vettel isnt in the same league as Hamilton - which is stating the obvious tbh,but theres often reasons why they say these things.
Cant deny Alonso has driven superbly this year and would rather see him get the title than Vettel. I cant ever be a fan of the man though. I will never be convinced that the "Piquetgate" incident happened without his knowledge and involvement,it just beggars belief.
I also thought his behaviour at McClaren was beyond disgraceful - he brought about the Ferrarigate scandal - he did huge damage to Ron Dennis,and imo the whole thing was a conspiracy to destroy Dennis (by Mosley & Ferrari) which Alonso was right in the thick of.
Hence,the fact that he told Dennis that he had designs for the next years Ferrari on his laptop didnt bring any punishment for him at all. In normal circumstances it could easily have resulted in a lifetime ban from motor racing. He got off scot free but it cost McClaren $100 million and Ron Dennis his reputation and to a degree,his lifetimes work.