There is no good or bad between oxygen welding and electric welding.It depends on the occasion:

1. Oxygen welding is generally used in the metal sheet metal occasions more, its welding material in 1 mm or so thin material, another because oxygen welding in the welding process to heat the welding material, the strength of the welding place will be reduced.

2. Electric welding is generally used in the steel structure more, its welding material in the greater than 1 mm thick material, another reason is that electric welding does not heat the welding material in the welding process, so the strength of the welding place will not drop.So whether it's oxygen welding or electric welding depends on what you're welding.