In retrospect it's always easy to diminish the results of a great champion. You had to see it back then to understand what a special fighter he was...
Penn's victories against Pulver, Stevenson, Sherk, Florian and Sanchez were amazing. He totally dominated before finishing them i violent fashion.
I really don't like the idea of Penn making another comeback - but a motivated Penn in his prime was dangerous everywhere and incredibly tough...
Moving up in weight to beat Hughes - one of the greats - is a fantastic achievement. Then again, you have to understand how special Hughes was.