The batman in BVS is a vengeful angry bat that has not come to terms with the loss of Robin. He looks to be very late in his Bat-career and I made the assumption that he has allowed the cycle of putting criminals away only for them to just get out again to eat away at him. Now he has gone down a dark path and felt is was implied heavily that he had consciously decided to break his rule of never killing, now it was all about putting criminals down permanently. If they came quietly he'd brand them and off to jail they would go where the branding was likely to end badly for them. If they did not surrender, well then what happened next was on them.
The difference with Superman was that Batman was essentially taking it to the next logical level. He was no longer targeting criminals for his vigilante / punisher style of justice but was now going after a super-being for a crime that they have the potential to commit in the future. The Martha moment was contrived and cheesy but I believe Zac wanted the name of his own mother to (a) shock him out of his murderous plan and (b) to humanise superman.
The difference with Superman was that Batman was essentially taking it to the next logical level. He was no longer targeting criminals for his vigilante / punisher style of justice but was now going after a super-being for a crime that they have the potential to commit in the future. The Martha moment was contrived and cheesy but I believe Zac wanted the name of his own mother to (a) shock him out of his murderous plan and (b) to humanise superman.