That's another bad one...Lex ever beating Supes. (has he ever beaten Superman?) Love Supes, but Lex is a horrible "arch nemesis".
That's like in
Watchmen when Dr Manhattan points out that "The world's smartest man poses no more threat to me than does its smartest termite."
If Superman, The Flash, Green Lantern, etc were absolute morons...like drooling on themselves stupid....Batman might have a chance. Otherwise there is no "plan" that beats gods who are
also very very smart and have a known history of overcoming incredible odds to win. They don't all suddenly become unable to win a battle where they have an incredible
advantage just because Batman is cool. (Superman has never had to overcome kyptonite before....GL never has had to overcome his weakness to yellow before...right?

)
Somehow it's not enough that Batman is incredibly cool in his own book against his normal non-powered villains. He also has to be able to beat up all the other heroes with super powers too.

t: Popularity has its rewards I guess.
A writer could easily have the world's smartest termite beat up Dr Manhattan.
...Man I love these nerdy conversations.