8 out of 10 for Batman and Robin. I LOVE Daredevil as well, so don't get me wrong, but this is an easy fight for the Wayne's.
Batman is superior to both DD and Elektra, anybody wo disagrees has fanboy rage. Sincemost people agree wth that I won't spend much time on this.
Damian is the weak link, a lot of people say. Well... Damian has fought the Heretic for quite a long time and taken severe hits from him without stopping coming back (before he died) and the Heretic was an enemy who Batman had REAL problems taking him down by himself. So Damian is in no way the weak link here. I even think he could takeout Elektra if he takesher seriously from the start. Maybe she would even underestimate him. No matter what happens, she would not take him down quicker as Batman takes down DD. If she wouldmanage to take down Damian in roughly the same time Batman takes DD, she would face a severly pissed off Bruce, who would crush her even more fiercely.
I am also 100% that it would go down as Bats vs DD and Damian vs Elektra since Bruce would rather let Damian take on a woman just to make sure the strength gap isn't as wide for Damian as it would be facing DD.
DD is highly skilled, but I would not rate him much higher than Nightwing, so he would not go down easy as well, but Bats takes him 9 out of 10 I would say. Sure, his senses take out Batmans stealth, but Batman doesn't need ot to fight him. Bats als has the edge in gear, which he could also use to help Damian fight Elektra.
I also hate it when people go to the "Batman always wins just because he is so popular", which is a cop out. He is one of the (if not THE) most capable unpowered street level character in both universes, not even Panther wouldtake him out without his superior gear (which even New Avegrs writer Hickman seems to agree on, when you read the Illuminati fight the Great Society.