Pulse weapons would be excellent against warheads if they didn't have $FoF in their table. They're not much better than flak at that. Still much better at fighter killing than Heavy Flak though.
PDTerPulse doesn't have the FoF problem, but it's never used. Presumably a WiH2 weapon. It appears to be a GTVA Khatvanga equivalent, with lower damage, a rate of fire of 5 shots per second, and a range of 1800m.