The Telus HTC Desire has a ifferent display (Super LCD vs. AMOLED), and I haven't seen any reviews of that particular display. There is also the fact that the Nexus One was the first (and still only) Android phone to have an official build of FroYo released. The other devices will get it eventually, but time will tell when that happens.
(Yes I know you can root the phone and flash an unofficial version, but not everyone would be willing to do that).
(Yes I know you can root the phone and flash an unofficial version, but not everyone would be willing to do that).