Sorry you are wrong! The Trek Domane+ has 63 newtons, Domane+ HP and HP7 has 85 newtons, Cannondale Lefty also has 85 Newton and the Bosch CX motor. Giant E+ Pro has 80 newtons. The Canyon is a Bosch CX motor but is limited to 20miles per hour! Yamaha is 70 newtonsI know of two other ROAD bikes with motors that are about 30% more powerful than the Trek Domain and Specialized Creo:
Have you considered the Yamaha Civante? It offers 70nm of torque support put to 110 cadence and has a 500wh batter. I use it on the two highest levels going 28 mph and up steep climbs and can easily get 50miles out of my battery. It costs $3,399. If you need components higher than Tiagra then the Giant offers similar specs with Ultegra components.
The only other ROAD bike (that I know of) that offers 28mph and high torque (E+Pro supports 85nm) and high cadence support (120) is the Giant E+Pro. This bike costs $4,700 but it does have Ultegra components and a powerful PW-X2 motor (equivalent to the Bosch 4th gen motor).
The reason the Specialized SL 1.1 motor felt weaker is because it only offers 35nm of torque support. And the Trek Domaine only offers 55nm of torque support. If you’re in good physical shape, then you don’t need more torque support. If you’re not in good shape, then these bikes will have a hard time going up 15% grade climbs because it’ll be mostly your strength propelling you up the hills =)
If you’re open to a GRAVEL bike, Canyon is the only other bike that offers high torque and cadence support. Their Grail:On gravel bike is a very capable bike with great specs. Because it’s a Gravel bike, it only offers one chainring so going a steady 28mph prob isn’t going to be as easy as on the Civante or Giant.