I don't rate him as world class if thats what you are asking. @
Zacheryah can tell you how highly he rated higuain and how I used to say that he is not as good as he makes him out to be. He is a very good striker and I'd love to have him but he is not a world beater. I'd take Falcao, Suarez, Cavani, Ibra, Rooney, Benzema, Costa, Aguero, Lewandowski and RVP(from a couple of years ago) and even Sanchez before him. That doesn't mean that he is "nothing but mediocre shit".
Tevez is also a worse player than these are (and slightly better than Higuain) but he is not mediocre shit. Tevez also shares a ridiculous CL record. This season he broke a drought that lasted since his time at United. Tevez is a top player. Mandzukic is also a top player but he is not as good (in my opinion) as the aforementioned group.
Morata in my judgment will become a player like Higuain. a 15-20 goals per season hardworking striker if he is in a normal team like Juve or Napoli and a 20-25 per season player in a highly functioning attacking team like Madrid. Higuain has been consistent at this high level in leagues and like Tevez this season, his CL form is very good since he came to Napoli. Both had a bad period in Europe and both have come out of it.
You take extreme positions about every player. Either they are mediocre shit or they are world beaters and thats just a false dichotomy. There are degrees of quality and given our roster Higuain is a top player. Suarez would ofcoarse pee on him.