id4 isnt in the same league as SW. Im assuming your piting ID4 against SW because of the physical size of there ships. iD4 was beat by one planet who was using ancient versions of there own tech while SW literally conquered a galaxy. About shield busting. SW has ion cannon which penetrates shields its a vmcanon weapon on IsD I' s annotated in every book also used in ESB during the hoth evac. sW wins no competition.