A man who built an empire and donated $100 million dollars vs. two douchey looking dudes who sued an empire. There is a difference (We are talking about how they got these gains)
Also, he just because he is worth a lot doesn't mean he has $10+ billion in liquid assets either.
Its pretty easy for anyone to say if they were worth X Billions of dollars to donate some fractional percentage.
We are talking about how he got these gains -- not what he is doing with them.
There is a difference.