pf vs mp

[Quartz]

Quick question: I need to make a decision between a faster single core 
and a slower multicore. The faq currently states that pf gets no 
improvement from mp. Is this still correct/current information? 
Presumably it would see no benefit from hyperthreading either, right?

For an OpenBSD machine acting as a gateway/firewall/router with a 
handful of related tasks (pf, dhcp server, etc) would mp yield anything?