JM, this is a fascinating quote, but I am not sure what is means. Is Tom saying Michael is too giving, or that he cannot say "no" to himself?
I took it as meaning that Micheal hadn't got Vito's talent for saying "no" and leaving the other person feeling as if they hadn't said it. I.e., Micheal's "no"s are too direct and not diplomatic enough. (Micheal had just told Tom that he was out)
