Fuji
Interesting the TB is lighter but uses more runway
1866ft v. 1620ft is certainly within the tolerance of flight tests uses to generate the POH data.
Take the TB20. How come I get 1300nm range which is 20% more range from it than the book says? Also the ceiling differs between G-reg (20k) and N-reg (18k). Must be the extra thick letters of the N-reg
Most likely it is the test conditions.
I would agree that a 160HP Warrior-class plane is not as capable as something with 200HP but that's another argument. With a typical 4-seater, really usable performance goes up fast once at/past 200HP and continues to rocket after that, reaching the point of dimishing returns past 300HP which is the limit of practical piston engines anyway. The TB10 is noticeably faster than the TB9, for example.
Also a TB9 has an optional CS prop - this makes a substantial difference to climb performance.
Oh nearly forgot... don't take the usual baits from bose-x
I see most people here have got the message already.