I didn't watch it, but I find Ricky Gervais as a whole even more offensive than Kathy Griffin. It is something in the tone, Ricky Gervais says these things in a smug superiority, even when he was taking jabs at fat people (pot, meet kettle), as in "those fatter than me", while Kathy Griffin always has that tone of desperate "I'll say anything shocking for attention!", and more of a willingness to laugh at herself as well.
So I'm not surprised he was mean, cause to me, he is always mean.