The USB-C Audio, while is the difference, the explanation still seems weird unless you are stating that Sonos includes the C-to-C Audio Cable as well as the 3.5mm to 3.5mm and the cross. B'Cos you'd still be looking for a C-to-C Audio Cable or C-3.5mm Cable if your Device doesn't have the 3.5mm port.
The Sonos Ace headphones are already available for purchase and they have got some serious competition. One of them is the 2-year old Sony WH-1000XM5, a top choice in the premium headphones category. Here are some differences to note if you are considering buying either pair of headphones.