At a range Oliver can at least take out Bushmaster and hopefully do some damage to the other two once before get close. Danny can take out Luke with a single chi-punch, which he's done at least twice that I can remember. Blade should be able to at least distract Black Panther long enough until Ollie and Danny can help him triple team the last surviving attacker.
Frank will not win at range but he will wreck in H2H.
I think he could pull some wins from distance(still losses majority tho), but I agree with h2h 100%.
Why would he wreck in H2H? Both fared pretty equally against Daredevil at close range. Maybe Frank was slightly superior, but it's not like Bullseye was crap at close range.
Anyway, at a range Dex should definitely take the majority since they both have guns. He's probably faster and definitely more accurate. Frank's only advantage is his superior strength and damage soak which isn't gunna do him any favors against a guy who will shoot him right in between the eyes the moment he gets a clear shot. We never saw Dex struggle at all to kill people instantly when he had a gun, he just didn't have a gun for the majority of his fight scenes.