Por 15 vs. KBS Rust Seal

Yeah, I probably should have prepped my stuff better, but it seems to be holding well for what I did so far. I pretty much just took a wire wheel on a drill to everything to get most of the junk off and then wiped it down with thinner and painted on top after it dried. It seems to be holding on well enough so far. I wanted to sandblast stuff but didn't have the patience. Bought a spot blasting gun with a hopper on top to do my floor pans, but even after taping and bagging the whole inside it started raining for a week, so I got lazy and just got the drill. I didn't want to blow the whole car apart either like I really needed to.