Less welding spatter. The material is transferred into the weld pool without any short-circuiting. As a result, the arc is almost entirely free of spatter.
Easier finishing of the welded joint. The bronze bead is soft.
Less potential of panel warpage when the weld heat is lowered.
Reduced potential for burnthrough.
A good seal along the joint.Cathodic corrosion protection next to the weld bead (cathodic corrosion protection prevents rust "creep" between zinc and steel along cut edges of the panel).