Yes I agree with you.
I have seen these cards perform better in t2. Not to say you can't come up with a great deck using these cards for t1, they may not have the most ease of use in simply rescuing and blocking at any given time. They are situational cards and it's hard to pull off Four Horsemen for a relatively minor return.
Angels martyrs gives you at least some synergy with them in t1. The horsemen themselves have access to a lot of great enhancements and War can auto block with certain weapons, along with Conquer as well.
They can be strong in lower level metas but I find judges Assyrians, or throne splash for example to just be a better pick.
One thing to consider with Four Horsemen is a demon defense using Red Dragon, Abaddon, Dragons Minions with Gates.An alternate win condition for Martyrs is gates your deck to a big Antipas with Crown of Thorns. Joy makes him even better :-)
