What is the DIFFERENCE that Guitar Cab IR Impulse Response makes to the Metal Guitar Tone?

If you ever wondered, what’s the impact of Metal Guitar Cab IR on your heavy tone, and what cabinet impulse response actually changes in your sound, this video is for you.
I perform a scientific level-matched test of 2 different metal guitar amps into a single guitar cab IR Impulse Response. I then change this into using the same guitar amp and changing guitar cab IR 3 times.

The difference is stunning and explains a lot! Multitracks from www.tight-sound.site (not affiliated)