I don't feel that the gender makes a difference. I think its all individual personality in the hamsters. Plus genetics might play a role in their behavior I'm sure.
Providing paired dwarf hamsters with two of everything is said to help prevent squabbles. I think the biggest help is scatter feeding to prevent fighting over the food source, as well as an extra wheel. These are just measures that can help, they don't guarantee success. If you plan on finding a pair of campbells make sure you have an extra cage on hand as well as extra accessories encase they need to be separated.
It really comes down to the personality of the individual hamster. Sometimes no matter what precautions we take, you cant stop squabbling. So just be prepared!