As has already been noted, the increasing strength was unintended. Hope that helps. If not, you can always turn off Raging Barbarians. It's a challenge option, not turned on by default. Nevertheless, FfH2 is purposely designed to be more difficult in the early game than vanilla Civ4 or BtS, which means you will encounter unlucky (i.e. unwinnable) starts more often. There are also several other good mods you can try, if FfH2 really displeases you. In the future, if you believe the game is not operating as intended (as was the case this time), please submit a post to that effect in the Bugs Thread above. If you think the game IS working as intended, you are far more likely to get helpful advice or to raise player support for a change to the game if you keep a cool head when posting, even in response to other posts which you find offensive.