I think that there are two different things at play here: performance and fun.
Of course full suspension works better - that's why people use it and it helps win races. You can find circumstances where it is of marginal benefit though.
However, the question is which is more fun. A 1965 Mini Cooper I used to own was (by modern standards) desperately slow and uncomfortable. 250 miles was tiring and noisy. My 200hp Saab is way faster, outbrakes the Mini and is totally undemanding to drive.
Which is more fun though???
The retro bike may be slower, but if it is more rewarding and involving to ride, fine.
I don't think that you can easily balance the two. Enjoy the difference between performance and fun.
This is exactly what I've been getting at.
What scuppers it, is that my TVR is newer, quicker, and less demanding than my MkII RS2000 was.