What Bat vs Super Things did you Learn?

[RVR II]

Wasn't much of a fair fight

[Trekker4747]

When you're in a fight with someone try saying their mother's first name. You never know...

[CJones]

I learned, good God this is a long movie. And this isn't even the long version.

[CJones]

When you're Lois Lane, and you have the Kryptonian killer, just chuck it underwater. We definitely won't be needing that again.

[Darth Geek]

This is the second time I've watched this movie, and Lex's plan makes less and less sense every time. What was he planning on doing with Doomsday if Batman had killed Superman?!

[MST3Kgirl]

I learned that enemies become friends when their mother's have the same name...
I learned that in Superman's apartment you don't have to worry about floor rot from flooding.
I learned that in fight scenes it's pivotal to have a slow motion Wonder Woman crotch shot
I learned that Wonder Woman's accent reminded me of the girl in "Werewolf"

[Iron Curtain]

I learned that Zach Snyder could make worse movies than 300.

I learned that what the Saturn was to Sega, this movie was to the DC extended universe: it was such a commercial failure that even subsequent entries that did better were any match for their juggernaut competitors who gained while they failed.