I make that point based on the opponent being good. If the artillery driver is good, you'll die without ever seeing the tank. Same goes for someone with the scout rifle. And that's not fun.
of course most weapons become unfun when in skilled hands but what about weapons that are unfun in general use, like bio
NFAR I utilise aim, reflex, tactics and positioning to secure kills. I'm then killed across the map by a guy having a seizure and holding down mouse1 while sprinting and jumping with the nfar.