Downloaded both files, the tempos are identical. I suspect it is whatever codec is being used for your Wav file playback. What program are you using? Do you have another media player that you can try?

I tried the Wav file with:
VLC
Windows Media player
Apple Quick Time Player

All the same, and all the same tempo as the SGU in BiaB



BIAB & RB2025 Win.(Audiophile), Sonar Platinum, Cakewalk by Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Kontakt, Focusrite 18i20, KetronSD2, NS40M Monitors, Pioneer Active Monitors, AKG K271 Studio H'phones