Do-it-all bikes basically. That combined with more money 😀
But really, it matters not. My Nomad rides as well in the flats and hills of Surrey & Berkshire as it does in mountains. And there’s plenty you can find to justify bigger suspension.
Then again, I also like taking the C456 out round the same trails and surprise myself how much it copes with the same trails. To be honest I tend to do the hard tail round Swinley more than the full sus. I like both, and I like mixing it up. I’d like to take both to the mountains and hard tail and big up on the full sus.
It doesn’t matter. When you see someone hitting bermy sweeping singletrack descents on a Brompton, fair play.