When I was a 4th year med student dicking around at the very end, I did a facial plastics rotation with an ENT in my hometown who did both cosmetics and free flaps and all sorts of random stuff - think skin cancer after a wide MOHS resection. Also facelifts. He'd easily put 75 in... but they were teeny-tiny 7-0 fast-absorbing gut, 2-3mm apart, in a running locking pattern, meant to be taken out 2 days later. But that would be for a huge facelift kind of thing. And while he was super fast, they were delicate as anything. Certainly NOT what you'd slap in (pun intended) in this situation.
He maybe maybe could have gotten 75 in, but the guy would have had to have filleted his whole forehead open... like a 10 INCH wound. Because a forehead isn't really a multilayer closure and we all know that. Now, if it took part of his ear off, that's a different story. But it certainly doesn't look like it from the bandage.
I've used 2 entire staple guns on a patient before, but that was a leg. And it WAS over 2 feet of laceration.