As someone who's been playing a lot of iro recently, I believe they need more nerfs than the current ones. As far as I can see, the Iroquois' only nerf in EP7 is its WC aura being reduced from 15 to 10%. Its units are still way too strong in the late game, especially with the firepit. I've attached a recorded game (no egorec) of a game which I should've lost by all means and only won due to iro's imbalances. @zoom
per your request.
First, Garja does make
a good general
point. Second, I did eventually watch the game, from both sides.
The first thing I noted, is that you found 210f, 95w and 90c in Discovery treasures, compared to the opponent's 60f, 0w and 100c.
The second is that you gained another significant advantage from the Outlaw Rifleman you converted, denying the opponent's TP and killing its explorer.
The third is that Eagle Eye ("Crackshot") is strong. That doesn't mean that it or the Iroquois warrants nerfing, though. To determine that, we must focus more on the overall performance of the civilization, and less on details—even if they are more directly noticeable.
The fourth is that the game was closely contested, despite the aforementioned extreme disparity in the respective players' starts.
The fifth is that the opponent also failed to send any unit upgrade shipments, before the game was decided, resulting in it being militarily outscaled. This seems both a deciding feature of this game, and characteristic of the match-up, in general. Whether on EP6 or EP7, Spanish players might find Unction helpful, to that end. You could also try Lancer—Rodelero compositions, at various points in the game.
As you can see, ITT and through the beta changes, I agree that the Iroquois is a stronger civilization than the Spanish. Beyond treasures and treasure guardians, I don't see how this particular game makes for a convincing balance argument, to that effect, though. Ultimately, you would most likely have lost, were it played on the EP7 beta, which features improved balance of this match-up (provided that our opinions of it are more or less correct), treasures and their guardians.
I will continue to follow civilization feedback and performance, closely. Thank you for your feedback, patience and recorded game!