Stock Single Piston Caliper vs Viper 4 Piston Caliper

Ehrenburg did that exact swap on the Bold Beeper (single piston to Viper 4 piston). As I recall, he did it on one side only and test drove it, and said it didn't pull to either side. So, I would guess that for ultimate stopping power there isn't a lot of difference between the two. But that didn't stop him from doing the full swap. My guess is he did it because he didn't lose any breaking, and gained control and better wear with the fix calipers.