Consider my post above again, 2 F16's can rate at 1.01 and 1.05 and both are still F16's ! These 2 boats would be sailing boat-on-boat at F16 events, but on Handicap (if the skipper of the slower boat wanted to) on different ratings.
Honestly Scooby this can not be.
Rule 1.6.3. prevents it.
1.6.3 All performance calculations, such as handicap ratings, shall be performed as if a platform has daggerboards or centerboards, even though a particular design may have neither of them.
In my analysis I've never seen F16's differ by more then 1.2 SCHRS points (1.2 %). The same swing can be found we measuring a 1998 Tiger and a 2006 capricorn.
Wouter