How is the 22B 4 pots brake compare with the standard 2 pots?

How is the percentage gain in performance if I swap the standard 2 pots to 4 pots?

I started with 2 pots on my STI2 these were crap , I then spent out on 4 pots these were alot better but the pads I had went off too quick and changed to them to EBC's . This made for a better setup , but on track these went off too quick . In the end I went for AP's with DS2000 pads (304mm) which I am very happy with . Looking back I should have gone for the AP's in the begining saving £400 in the process .
Dave