Which one did you think was a bit of a joke, the T-1000 or the T-800?
Obviously, they humanized Arnie's Terminator more, being that he was now the good guy. Personally, I liked the dark humour they went with, with Arnie shooting peoples knee-caps off because John told him he wasn't allowed to kill anyone. The T-1000, however, was an amazing villain. That thing was just nasty and seemed even more unkillable than the T-800 in The Terminator.
One thing I do say as a negative, John Connor was quite annoying at times. His "cool lingo" has badly dated now, too. It's funny how the saviour of humanity always seems to come off as an annoying boy whenever we've seen him on-screen!