Sebo, N0oxy,
that us true in both countries. Ibasiac says on his yotube C3 tests that in the UK, a power head is not even available for the S8 (C3).
In the US, all C5's, had power ports. No longer true for the C3.
Even when they did, it cost you more to buy a basic model with a straight suction or turbo burst then upgrade to an electric head later.
We like our sense rugs in the US, even if they are only area rugs. A plain muzzle is fine for surface lint and dust, but eventually, it gets deep down in the pile, and if your vacuum doesn't get it out, when you walk on it, the dirt cuts the fibers away.
Not even a Miele has enough power to suck out deep down dirt.
With a good power brush, and also with a beater feature, you can maintain a carpet from new with frequent vacuuming, and occasional dry cleaning with Capture powder.