The ramp test is flawed for certain types of riders. If you have a larger anaerobic contribution you’ll get too high of an FTP. This is a serious problem for people who are suffering even at sweet spot.
I just did the kolie moore baseline test for the first time. I like it a lot better than the 20 minute test even though it’s longer. Starting at a baseline power and then ramping up until you die works a lot better for me than trying to stay above threshold for a full 20 minutes.
BTW, WKO tells me that my anaerobic contribution, even on the 20 minute test, is 6% rather than the typical 5%.