I think it is.. Similar bottom end but a slightly better top end.. I love the new MK4 Naish wing..
Interesting comment on Mk4.
I had Mk3 5.3m and changed to Matador LT 5m with far better bottom end, pull in and go and pump for extra lift. But LT was hard to lose power as wind increased, it was on or off, whereas Mk3 was easy to control giving it a massive range, just started way higher.
Saw some reviews of Mk4, which said bottom end better over mk3, but without saying good, So is Mk4 a massive improvement over Mk3?