I think it would depend if you have a water pan in the smokers. Electric could be dry heat, while burning gas or charcoal produces moisture. In stickburners you have plenty of airflow, but in gravity fed smokers or kamado style smokers there is so little airflow it can effect how the bark forms. I have to cook a little higher temps in kamado smokers to make up for this increase in moisture.
The rub ingredients will impact bark formation as well, but i have noticed a distinct difference in my barks when cooking on different cookers.
2 NB Banderas, Imperial Kamado #5, Imperial Kamado #0, Large Grill Dome, Large Primo Kamado, 22.5 Weber Silver, 18.5 Weber Silver