I really don't think there's a way to link the two.
I think it has a deal more to do with the ferociousness of the parents and their level of aggressiveness.
Also, from what I understand, hatchlings that were incubated in too warm a temperature often display feeding disorders.
It's too difficult to examine such things I think... not unless an experiment on a huge scale is made.
I think it would be best to simply treat them as individual cornsnakes with different behavior patterns than defining behavior by morph.
An interesting theory though