Its a good video, there is still life in old kit even if its not as user friendly.
I think it prompted Maciek Rutkowski to put his video on youtube, apparently it was filmed earlier this year.
Just 1.5 knots slower on speed, but way down on early planing, acceleration, gybing, comfort etc. If he had used an old fin and rig there might be more of a difference, although Jim Crossley (UK speed sailor) has done some runs on all old kit and been around 10% slower. But top speed was the only criteria it was close on.