I just uploaded a better version of the 2nd part, I edited my last post.
Tanga felt pity for us
and posted in the French forum what he says about Fed. First he says Fed is a monster from another planet, I think you got that part too, and then he explains that Fed was completely different when he was young, with platinum hair, David was beating him easily, he had no backhand, etc. The change in his attitude is incredible because he was somewhat crazy at the time. He is so impressive now blablabla. They all get tight when they have to serve out a match, but not Fed, and that's a huge advantage over the others.
So nothing new, but that helps to understand why he is laughing when he talks about Fed.