Can Gran Comp brakes work as well as Mafac Racers?

I've been fine tuning my Centurion Turbo for Eroica CA. I put salmon KoolStops on the NGC 400 brakes with cleaned and lubed original cables and housings and levers. They work. Yesterday it was raining and I took out my fendered PX-10 with Mafac Racers, KoolStops, with new cables and housings. What...