Just here to share my personal results as I always knew the ramp test resulted in a higher FTP estimation for me, but never actually measured the difference.
Yesterday’s ramp test: 257W
Today’s 20 minute test: 244W
So a 13W or ~5% difference for me.
I think a few watts of this discrepancy could be due to pacing issues and lack of experience with the amount I should suffer in the first 10-15 minutes of the test. Also, a general lack of experience with sweet spot/treshold intervals. Just starting my first Trainerroad plan so hoping to resolve this over the next few weeks!
Going with the lower FTP estimation (20-minute test results) for now.