I’m still scratching my head as to why power-only ramp tests are still used to estimate threshold when the slope of the ramp has such a dramatic effect on pVO2max. If you look at the range of pVO2max from the various slopes, you’ll see more than a 100 watt difference in the same population.
The ramp test underestimates the anaerobic contribution for the gifted. It operates by a literal estimation, you could have a 3000W sprint and the ramp test would never know.