For a planets average surface temperature, does size matter?
no
Does distance from the sun matter for a planets surface temperature?
yes, distance from the sun matters of the planets average surface temperature
does rotation rate matter for a planets average surface temperature?
no, only on day and night temperature difference.
Does reflectivity matter for a planets average surface temperature?
yes, because it reflects the heat out and away and doesn’t get absorbed.
Does greenhouse gasses matter for a planets average surface temperature?
yes, because those greenhouse gasses can trap the heat.