in response to your question - no, sauron is not weak because he was defeated by a man. I was implying that I dont see why all these people are saying there is no competition for Sauron if you put him against gandalf - its silly.
Lets us remember Gandalf is very old as well, even the scenes at the black gate you can see he is in a bit of agony from swaying around too much,
Discos - not weak, just plain stupid to put his hand out towards a man who is in reaching distance of a very sharp blade.