Not those model years but i can say in general terms that around the 16-19 3S had a rocker line that was super close to the Dyno. Like reallly close
So the get up and boogie, top end speed are really similar to me.
I do agree the 3S can be better in a bottom turn with full rail engagement whereas the Dyno is more tighter / off the back foot. ... so I'd agree with your thoughts about gybing
I also think my FSW is better than both

but the rocker line might be really similar too