Kevin at Ownhammer would disagree with you.
I tried his experiment and that is how I decided to follow Kevin's example of also offering 200 ms & 500 ms at 96Khz.
Don't forget, when you mic a cab, even in the deadest of rooms, you are not only capturing the speaker's on axis and off axis sounds, you are also capturing to a lesser degree the resonance of the cabinet which has it's own harmonics and resonances.
When you elongate the duration of the sweep, you are sampling more times per second each waveform through the travel of that sweep.
20 Hz alone takes 50 ms to develop one complete wavelength. 33 Hz alone takes 33.34 ms to develop one complete wavelength.
https://www.unitjuggler.com/convert-frequency-from-Hz-to-ms(p).html?val=30