… if an airplane is capable of being “flown” with “2-fingers,” I would presume the reference would not include a 2-g, 60-degree bank level turn while maintaining the entry airspeed, even if other, more typical control was capable of being maintained with only “2 fingers.”
Sure you can fly a 60 deg turn with 2 fingers in a 737. You just have to trim the back pressure away. Which we would of course not normally do, but indeed it is possible.