225*.95 = 213.75, so it sounds like it gave you the right number.
Did the test result give you 213 or 203?
203 is 90%
Where does 90% come from?
Several sports scientists recommend 90%, because 95% could overestimate FTP of age group athletes.
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Itās all a guess (or estimate if you want to be more scientific). For some itās 90 or 95 and for some the ramp is better and for some it reads high. I think most amateur athletes focus is best spent on consistency rather than ensuring their test protocol
Is exactly perfectly correct
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When I look at the power duration model in WKO5 Iām shown 94% for me. At my 20 minute power Iām getting a 6% anaerobic contribution.
I highly recommend the Kolie Moore baseline test (35-45minutes). Going longer really shows you what you can do aerobically. I also found the progressive pacing of the 35-45 minute test easier than the all out 20 minute test.
Who?
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If it is useful you might not have seen these:
this calculator attempts to compare methods of working out FTP+zones from 20min test
and this calculator universally finds any point on your power-curve from any other point (advanced users can input cycling style eg climber). bw alex
I just did both the ramp test and 20 minute test out of curiosity (3 days apart). Painful curiosity. Ramp test put me at 315W, 20 min test put me at 294W (310 for 20ā).
This was kind of what I expected, as I always prefer VO2 over Threshold work. Itās nice to know what the discrepancy is between those two numbers now. Iām sticking with the ramp test number because itās what Iāve been using for training, and because itās higher, ofc.
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Doesnāt Friel recommend you take the last 20 minutes of a 30 min all out effort?
Only for your threshold heart rate. Average power of the whole 30 is ftp he says.
I think TR should create a new specialty training block which consists solely of FTP protocols. āFTP Anxiety Reduction - Specialty Phase.ā
TR Ramp test
Zwift Ramp test
8 minute test
20 minute test
Kolie Moore short protocol
Kolie Moore medium protocol
Kolie Moore long protocol
60 minute test
And do this block multiple times
- big ring vs small ring
- fan on vs off
- carbs vs no carbs before
- hot vs cool room
- inside vs outside
- powermatch on vs off
At the end of this youāll have a really good idea of your FTP. 
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Only being able to hold (-5w) FTP for a 20 minute max effort would set off alarm bells for me
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I did this 3 times last year just because it was fun. Not the 8 minute test, as that is probably my strongest duration (aside 2 - 3 hours) and doesnāt reflect my FTP very well at all. I did the Kolie Moore Prog 1 test instead.
Mid / late Base ~ Feb 2020
Ramp Test (Zwift) 274w
20 minute Test 285w
Kolie Moore Test 284w
WKO mFTP 280w
Mid season 2020
Ramp 282w
20 minute 285w
Kolie Moore 286w
WKO 285w
End of seasonā¦
Ramp 288w
20 minute 275w
Kolie Moore 274w
WKO 273
So my conclusion, for me, it depends where you are the season. You canāt test at one point and say they are aligned or not aligned, they might or might not be next time.
They all look pretty aligned to me, depending on your setup/PM (if your PM has the +2/-2 accuracy).
Ramp test 9 - 10 under and then close then over by 13w compared with the others.
The others within 2 - 3 watts.
Vector 3 claimed accuracy 1%
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Itās a strange world. Flip those numbers the other way round and you have almost exactly my results. 
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I like suffering so I did an Hour of Power FTP test today.
After trying to find balance at start, I settled into a pretty well balanced pace.
Normalized Power for whole 60 mins was 254, for the 55 minutes 253. So I guess I can follow Tim Cusackās method and set my FTP to 255.
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Seems everyone has higher ramp test results vs the 20 min test.
My indoor ramp test is around 241 - Outdoor 20min test is 290 (before division).
I donāt have a history or have done a lot of v02max work so this is probably why. So I do my v02max workouts indoors at around 250FTP and Sweet Spot at 265FTP. Or maybe I just have an anxiety when it comes to FTP testing and Iāve never properly gotten my results. But Iām very sure I can hold 260-65 outdoors for over an hour as I hold 230 for over 2-3 hours.
Overall, I tend to go with the lower number so I donāt fail workouts. Better than going with the higher number for egoās sake. Hopefully, when I finish SSBMV2 my v02max will be at a normal level so my ramp tests will be accurate yardstick for all my energy systems.
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Smart. 