It is the inclination, the procession of the equinoxes, and the elliptical orbit in combination that give one more, one less, sun.
Or, did you have some other reason the southern ice cap is larger?
"procession,precession, whatever."
No. I am truly interested in how one pole can receive more sunlight than the other.
Seeing as how the equinoxes wind up equally at the same latitudes from the equator, I have always thought the poles received the same amount of sunlight. That the earth wobbles a little is a given, but that it would tend to favor one pole or the other is not something I would tend to believe.
A non elliptical orbit should also tend to even out over time.