Interestingly, the State of the Union address is actually a joint session of Congress, as well. It looks a little different because there are other invitees (the President is an invitee), including the Supremes, Cabinet members and the Joint Chiefs.
So, to be technically accurate, both W and Clinton delivered (I believe) eight SotU speeches to joint sessions, with each delivering an additional non-SotU speech to a joint session of Congress during their presidency.
I’m trying to remember which pundit it was that quotes the two over 8 years each.