Statistically its the same regardless of if the morph is male or female. If that is the actually reality I don't know, but I would think so.
I think from a collection stand point you benefit more from having co-dominate females and dominate males if you are just starting out. Say for instance you could only afford a spider and a pastel. It would be better to get spider male and pastel female because then you could breed a bee son back to mom for a shot at a killer bee sooner than if you had wait to raise up a bee daughter to breed back to a pastel dad.
If you can only have 1 morph, it's better to have your male be the morph because males can be bred to more than 1 female per season. So you could breed a mojo male to an average of 2-5 female normals.