You can't compare the Apple Watch to any other iDevice though, its a whole different product category and will be worn all day on your wrist, not kept in a book bag or pocket. So while I have never broken a Macbook, iMac, iPhone or iPad, they aren't subjected the the abuse that an Apple Watch will get (depending on your lifestyle).
Extremely debatable, as you can't drop the Watch like other iDevices as it's tethered to the wrist and it's waterproof to 1 meter for 30 min, also unlike other iDevices, and water damage would be covered under the standard warranty (and by extension, CC extended warranty).