I don't know about his numbers but he refers to torque multiplication thru gearing, that's why ICE vehicles need transmissions.

HP/Torque numbers are measured either at engine crankshaft of the rear wheel in top gear.

True, but there's a key difference that some people don't realize.

Power is conserved, so power at the crankshaft equals power at the drive wheels (minus friction/inertia losses).

Torque is not conserved so torque at the drive wheels is R times torque at the crankshaft, where R is the total gear ratio (crankshaft revolutions / wheel revolution).

Theoretically speaking, a bike (or car) with a 100 HP engine has 100 HP at every point in the drivetrain from the crankshaft to the wheels (well more like 85 HP at the wheels after losses). But an engine with 100 ft. lbs. of torque could have 1,000 ft.lbs. of torque or more at the drive wheels in low gear, to less than 100 ft.lbs. in top gear. All depends on the gear ratios.

So when people quote torque numbers, they need to specify whether it is crankshaft torque or drive wheel torque. The difference can be an order of magnitude or more! This is true of electric motors too, since the motor itself may spin at 20,000 RPM or more.