Yes ... that's kind of why I was asking ... in so many "help me choose a saddle threads" ... the answer is always find the one that works for you and you can only do it via trial and and if you do find something comfortable it'd then make sense to replicate it on all the bikes you have.

That said as per fietsbob's comment about manufacturers recommendations .... I'm guessing if you're in a very forward / racing position a wider saddle won't benefit any more towards the rear as the weights more taken on the forward part of the perineum but may possibly cause chaffing on the legs if it's wide whereas if you're more upright position .... wider provides a larger area of support.

I guess quite a lot of saddles happily sit in between and could be used for either but maybe not the best for any on in particular.