It's not only what I hear, but also what I don't hear.
The missfires are obvious. But I don't hear a rap in the pipe, and I don't hear a power surge.
I hear several things, the most blatant of which is missfires, quite a few of them. Missfires eat power,cuz not only do you lose the power of that cylinder, now the others have to drag it along. And then there's the disruption in the exhaust. The slug of unburned A/F may light up in the pipe, driving the hot expanding gasses in two directions.This totally messes up the scavenge cycle for the next event, but worse, can drive exhaust back into the intake during overlap. When the slug gets into the merge it messes up some or several following scavenge cycles for other cylinders. And I believe I can clearly hear several to many missfires.
Next is the rate of engine acceleration. I can not see the graph, but am guessing the hammer fell around 3200.
The first thing that happened was the engine stumbled from lack of pumpshot, and it struggled for a bit. Then it sloooowly started building revs. Then it started missing and you can clearly hear it get lean in the pipes. Look at the chassis straining on the straps,not. She's way down on power.
The first thing I'd look at is the coast down graph to see how much power is getting sucked up in the rest of the powertrain.
Then next is a compression test. You need more than 150ish to put some rap in the pipes.You need 160 or more to be "hot". I'd be surprised to see over 130 in there.
The rate of engine acceleration remains pretty much the same to what sounds like a premature shut-down. So I can't hear the cam in there. Sure it has a bit of lope at idle, but there's no surge at the top.
So, it's not only what I hear, but also what I don't hear.