Some of my problems with the plot points:
* If Batman has no problem killing, why is the Joker still alive, as implied by the Suicide Squad trailer?
We dont know where joker is or what happened between the two. They could have had a confrontation and Joker got the upper hand and escaped or something.
* If Batman/Alfred could easily figure out Martha's whereabouts, why can't Superman? Or for that matter, why can't Batman/Alfred do a research about Superman including his background/family? Then they'd have known that Superman is Clark Kent and have family.
How would supes find her? Batman knows Gotham better and has the technology to try and find her. Not only that but Lex said he'd have her killed if he didn't follow Luthors plan, so Batman had to do it whilst Supes confronted Lex.
* I also don't understand why Superman went on a high horse about Batman being a vigilante for branding that girl-trafficking goon when he himself just slammed a warlord against a wall or two just to save Lois?
* What is the point of the piss and the senator? I know it's related to the Senator making a remark comparing Lex to a piss. But what kind of public speaker not prepare to bring his/her own bottled water when delivering a speech or holding a conference?
* I don't understand why Batman is so angry at Superman. It is implied that he has had fucked up experience in the past year or so but without knowing those experiences (childhood trauma aside), he just came across as a lunatic with anger management problem.
He caused mass destruction in Metropolis and destroyed the Wayne building with all of his employees in it, and due to this and everything that happened in MoS, he believes Supes to be a threat.