Masuta has phasing on a standard level for a couple of minutes so literally any attack would just go right through him and not harm him. The sonic batrang first has to hit a target to go off first and create that high pitched sound. Masuta has plenty of ways to counter that so if that's your arguement for Batman winning that's definitely not enough. In H2H Batman would lose since Masuta has Martial Arts on a Superior level and Combat Supremacy at a Supreme level. Masuta in DC would be one of those Martial Artists on a Lady Shiva level who Batman would struggle to beat.
Next he has Gravity at a superior level and this is the ability that keeps the sonic batrang from reaching Masuta. Masuta could use his gravity ability to send the sonic batrang and any of Batman's equipment being thrown at him right back at Batman. He can send multiply objects flying back at Batman and Pyro. So Batman and Pyro would have a hard time with there attacks. With enough control and power Masuta can do this with his Gravity at a superior level.
Batman loses here. Pyro is really his only shot at surviving here. Batman's intelligence doesn't help here since he doesn't know the abilities and skills of either opponent. Funny thing is I didn't even get to his physical abilities like strength and stuff for Masuta.
Then you have good ole Zombiegirl...
From an RP perspective Batman is going to sneak away like everyone has said. But I feel I have to address a few things in this post.
-Sonic batarangs do not have to strike their targets. I will provide scans if necessary.
-I'm assuming that Mastuta needs to breathe while phasing, so it's a good thing that Batman carries knockout gas.
-Mastuta can catch multiple 100 mph projectiles while holding Batman?
-Pyro can beat Zombiegirl.
Yeah Treach, as I said at the top, for an RP Batman will let Pyro go down then try to smooth things over.