I placed the 2002 H16 jib on top of the old (2000).
1. The luff was 5 inches longer
2. so, more sail area in head.
3. Straight leech at head, vs scalloped in old.
4. The clew appeared to be 1-2 inches higher
The main difference to me is:
5. Luff curve (JLA) is MINUS 1 to 1.5 inches on the new,
to me this explains why my old headsail would point as high as everyone else.
(night & day, very full luff) Some say old fuller jib also backwinds main.