Penetration is not on how hot it is, its all about prep! Bevels, open roots, etc. Spray is hot and fast. Its for solid wire only and only in the flat position, vertical down and thats about it. Plus it takes a ton of power to do it, your 220 wirefeed at home wont do it.
So with the right prep you can get the same amount of penetration out of mig as to flux core? Flux core is just better for easier prep or if you are welding outdoors(wind)?
