I have no way of measuring how much good Bill Gates had done for the world. He has certainly done a lot of evil as well. I literally have have no way of objectively quantifying either, and neither do you, which is why your claims cannot possibly be objectively supported by any rational means.

Ok but then would you agree that you also can't say Salk did any good for the world?

No, I wouldn't agree with that at all.

Also big difference between saying 'X did this good thing' and 'X did more good than everyone else combined'.

And the onus is on you here - you made the absurd claims - now either back them up or walk them back :)