traius. If I have copper in the BFC I can axerush. If I have iron in the BFC good for me, I don't need it. I get to IW and I have jags right away. Woods2 jags will go in and choke/pillage my target so that they do not have metal. CR jags are slightly better at attacking cities than axes, and since I'm only facing archers, I'll just build those jags instead of axes, and obliterate those cities.
Look I'm not interested in theorycrafting, I started this thread due to experience. I've played hundreds if not thousands of games of civ and I can tell you I've been so very disappointed with things like keshiks and praets. They are situational, very situational, and end up not contributing anything to the game more than 50% of the time. Oh sure, there's that odd game, 1/4 playing the Mongols, when keshiks shine, or simillarly with praets. But I play random settings, so I get to play Rome once every two months, if that, and if praets only work 1/3 games then guess what, I only see them do anything useful about once or twice a year. But what about Monty and the Aztecs? Well Monty's traits aren't all that impressive but the jag ensures I have a strong early game. I'm making these observations based on EXPERIENCE, not theorycrafting. In my experience, jags have completely dominated countless games. Sure, maybe on paper they don't look too hot but then why do they break games? Praets almost always disappoint me, in contrast.