Which is faster a Bridgeport or a Peripheral Port?

In this video from racedaymedia, we can see a side by side comparison between a Mazda RX3 with a bridgeport 13B engine and an RX8 with a peripheral port 13B engine at one Australia's (if not the worlds) most famous race tracks, Bathurst.  To make matters even more interesting, these cars are owned and driven by the same person.  Major differences?  The RX3 has a major weight advantage Vs the RX8's peripheral port engine that can rev to 11,000 rpm Vs 9,500 for the RX3.