I would ignore Mr. Bolton. He would like to sell you a highly marked up controller and motor kit to replace the Rad fat tire motors. He is picking on Rad because they're the biggest target. Dozens of other fat tire makes use the same Bafang motor because the performance is adequate.
On the RadCity, a local ebike dealer in my town says that Rad's torque claims are also too high, but we all know this is billed as a city bike. If your partner kicks your butt with it, it's gotta be fast enough,
I used to worry about power, torque, blah blah blah when I started to convert my old bikes to electric. I built a fat tire bike using the smaller Bafang motor. and it was fast enough, running up to high 20's. My 750W bafang mid drive will do the same. But now, my favored riding is on light, low powered bikes with good brakes and smooth shifters. Probably not ebiking as most people like it, poking around at 12-14 mph in level 1 assist, working up a sweat sometimes.