- and will very likely be able to out-sail many, if not most cruising monos upwind.
If you are talking about the individual sailors on those monohulls, then I will leave you to that discussion.
If you are talking about the boat ability itself, then you will need to more precisely define that.
Your Helia 44 (say) will beat an Island Packet 44 (say), but not a Bene 45.
And if there is a heavy seas or high short chop, you probably won't be beating many monohulls.
But I understand your underlying point. I attempted to get this thread to define monohulls when discussing performances instead of simply starting the debate by characterising monohulls in general as the performance standard.
It seems like that is the turd on the floor everyone refuses to acknowledge.
The truth is that a very large number of cruising monohulls out here start out as poorer performance designs, and are further made worse with large arches, solar panels, rails filled with fuel jugs, big Bimini shades, older sails, etc. Even more performance oriented ones are brought to mediocre by the desires of practicality and comfort.
And practicality and comfort does become paramount for a significant number of longer term cruisers. This is where most catamarans start with an advantage.
Full disclosure: we are a very overloaded catamaran and our performance suffers greatly from when we weren't. We do live comfortably and still make decent passage times (we plan for 6kts, and usually average 6.5-7.5 on passages - if we were within manufacture loaded displacement specs we would average 8-9kts).