Harzel
Adventurer
Those things don’t really indicate size, though. Revolution period is a function of the mass of the parent object, mass of the orbiting object, and the distance between the two objects. Rotation period is a function of circumference and rotational speed. Mars has a rotation period only 37 minutes longer that Earth’s, and it’s about half the size, where Venus’ rotational period is over a hindered times the length of Earths, and it’s 2/3 the size.
I don't think it invalidates your point (and in addition it's nit-picky), but by usual definitions I don't think circumference enters into the relationship between rotation period and rotation speed - period (time per rotation) and speed (rotations per unit time) are just inverses of each other. Possibly I misinterpreted what you said.