Do you really notice that much difference? If you do, I'd say there's a fundamental problem rather than anything else.
er, exactly.
the fundamental difference being about 180degrees.
i only have to turn my cranks 90degrees to set myself for a left hander, and can do this in one smooth movement, but 270degrees for a righthander – so i've got to quickly unweight my left foot to get it backwards past tdc, and then apply the weight again when it's at the bottom of the stroke.
now i'm aware of it, i've got something to work with, and i'm getting much better at it.
i confess that in most right handers, i just pedal forwards, but this can get me into trouble if i try it on steep stuff when the back wheel is more or less locked out. so i'm trying to get the hang of both, and learning when to use either…
(numbers are approximate)