Actually, under federal law - No e-bike sold in the Untied States can function over 750w. I have NEVER seen my Rover operate higher than 745w. Both bikes still fall under federal regulations for the max speed of 20 mph/750w rules.
Also as stated in my video the Sondors I bought which is equipped as equal to my rover (motor, battery size, suspension, lcd, fat tires, etc within reason) comes out to $1,152 shipped vs $1,499 shipped. That is actually a $347 difference between the two bikes.
However, as stated in my review video, the Sondors 7 is no longer offered (at time of video production) and therefor the next model up was used which is the Sondors X with only difference known of a 48v/17.5 ah battery & a 150w increase motor. That bike came out to $1,353 shipped vs the Rover $1,499 shipped. That is a meer $146 price difference.
Again this comparison is for the bikes that are very similar in configuration. It's no different than comparing two different vehicles from two different manufactures. One company offers XX engine with XXX hp vs the other guy with XX engine with XXX hp. Those comparisons are also made as well as other similarities. Prices are never 100% equal, either which leads the end user to determine the price difference, positive or negative, to validate the value of one brand/features/specs over another.
That said - a Sondors X configured similar to a Rad is not an overall better value. If you don't need the suspension forks, bigger battery or LCD display on your e-bike then sure.. one COULD say the Sondors X is a better value if ONLY the quality difference and support/ordering differences can justify the cost of savings.