From what I have seen so far the speed difference between the FX-One and Blade is not that spectacular.
True, and even if we run a fleet of F16's against a fleet of FX-one's there still won't be a clear outcome. It is actually very difficult to see "5% performance difference" when looking at actual fleet racing results. Small differences in crew related skills and luck can easily overpower such a performance difference. Placings without actual sailing times, like the combined FX-one/F16 event in the UK are useless as only the average time over a larger number of sailors and races can hint at a structural difference in performance. Up till now we have not had such a data serie; the F16's and FX-one just don't meet up at events often enough. And certainly not in the numbers that allow the averaging out of crew skills and luck. The data that we do have is often scewed significantly one way or another because one crew is obviously more skilled then another. I can't compete with Dirk Zwitser and the FX-one sailors around me (my club) just aren't of my skill level. Often we see singlehanded sailors on one type race against the 2-up version of another and that is not very helpful in comparing the two boats either.
The only basis of my comments that I do have are my personal experience sailing both boats (at different times) against F18's etc. There is nothing as of yet that suggests to me that Texel is wrong in it performance difference between FX-one and F16. As Texel work remarkably well for so many boats I feel that we should Texel the benefit of the doubt in absense of clearly superiour counter data.
But I do admit freely that I also look at the specs of both boats and the class activity and weight the F16 as slightly faster as a result. Afterall the specs are largely identical with the F16's being significantly lighter and seeing more development. It would really surprise me if the FX-one somehow manages to be equally fast or faster then the F16's. I just don't see any scientific reason how that can be. Barring some F16 designer really screwing up his design. But even in this case, as there are multiple F16 designers and builders, there is always one that is bound to have designed a proper F16.
So here I have explained my earlier comments in more depth. It is up to the reader to determine what is more reasonable.
Good luck all.
Wouter