[quote=@Pumpkinlord]
[@knighthawk]
I thought spider man could only lift cars. .?
I got that from the 90s animated series tho 
[/quote]

The differences run from Writer to writer. Add in theoretical physics and he could websling a 20 ton car thrown at him for his hammer throw, since it is already airborn, he needs less strength to adjust its flight path than to actually get it moving from a still position.
Lever, wheel/axle, pulley, ramp/wedge...Science!