I had to switch mental gears a couple of times while reading the S/B Annual until I realized (to stretch a metaphor to the breaking point) that it's best to take it out of gear and just coast. Yeah, it was pure fun.
Being utterly unfamiliar with Deadpool (I didn't know who he was supposed to be), the fact that he didn't get to say his name was only annoying. I guess readers with less DC history might wonder who the parallel Bruce, Clark and Lois were.
In a way, it reminds me of the 2001 two-parter in Superman #168 and Detective #756, where Batman and Lois sneak into the White House to steal President Luthor's kryptonite ring.
I missed seeing one of those long, convoluted expository monologues Weisinger would have had someone say. But then the panel would probably have exploded.