Might be a question of having the right trim. In light to medium winds there will be no benefit anyway. Wasn't old Texel rating even without a boat width factor?

Changing from a Dart 18 to my Javelin, I had the feeling that the Javelin is always faster, because it heels up so easily. However top speed (not vmg) GPS measurement tells a different story and so far only the T was faster than the Dart in terms of top speed (of the boats I sailed so far). By the way 2.3m vs. 3m width... So yes, feeling is not equal speed.

Cheers,

Klaus