I agree, but the Cub is "prone" to tip stalls, especially on take-off when under ground effect. The Piper Cub is a plane with a lot of wing area, and rounded wing tips. What typically happens (on takeoff) is the aircraft gets airborne while in ground effect, and the pilot believes the aircraft has the right amount of airspeed- once it comes out of ground effect, with a wingtip low, it stalls. Pilots that understand this will be seen gaining airspeed low to the ground prior to applying up altitude, with gear off the ground.

Ground effect can be best explained by the distance from wing tip to wing tip, measured above the ground. So, if a airplane has a wingspan that is 80" long- the first 80" above ground are considered ground effect- an area where less airspeed will produce more lift than normal- once out of that airspace- the basic rules of aerodynamics apply.