Hey Jack. The ParkZone Stryker B uses a 480 brushed motor, with a part number
PKZ1216. The HobbyZone Supercub uses a 450 brushed motor, with a part number
HBZ7134. The two motors LOOK like they're the same physical size, but the fact that one is a "480" and the other is a "450" gives me reason to believe they are different motors. This would be a good question for Horizon Hobby. Another idea would be to go to a Local Hobby Shop, hold both motors in your hands and inspect the writing on the motor cans themselves. Let me know what you find out!