COURAGEOUS DRAGON:
The triple cav buffs on this piece are great for running bosses and using Cavs in PvP. The Archer HP buff is inconsequential compared to the Fearless Armor's troop buffs for pvp.
FEARLESS DRAGON:
This piece is obviously good for everything except Cavs and more than good for a strong defense early in a servers history.
COURAGEOUS ARES:
Just like it's Dragon counterpart this piece is Cavs through and through. By far the best single piece of Gear for Cavs besides the Ares Spear.
FEARLESS ARES:
Want the perfect piece of Gear to make your Ground troops absolute beasts? Look no further! This piece buffs Ground HP and Defense which are more important to Ground troops than Attack is. On top of that you are getting debuffs against Archer and Siege attack making them even weaker against your Ground who already had a distinct advantage.
COURAGEOUS ACHAEMENIDAE:
SIEGE BABY! Let's make our siege significantly stronger with just this one simple trick! Buffing Siege Attack and Defense while debuffing your enemies Siege Attack means that your siege will outlive your enemies Siege (since siege trade fire before turning to other troops) and allow them to get to the main action with more remaining.
FEARLESS ACHAEMENIDAE:
A great, well rounded piece of Gear for your ground or wall general. Buffing your Ground and Archers while debuffing your enemies Cavs will make them think twice about sending Cavs at you even if you don't have a super large amount of Archers to counter with. Overall the Fearless Ares Armor is better for Ground Offense though.