Black Knight Irios
Explorer
Well, Marked Scourge is a secondary stat, for one, where as Oath is not.
I think the errata changes over the past year have shown that primary stats boosting attacks or damage are too powerful. I would think this is true of Painful Oath. Secondary stats are far more balanced.
Also add in the radiant, the most common vulnerability in the game. Scourge is just damage.
MS uses a secondary ability but if you are a STR/WIS Fighter they are either identical or a +1 apart. Not a big deal.
PO adds the radiant keyword which in turn allows some other things to work but the raw damage added is roughly the same as MS adds.
Take the feat!Lots of good discussion here regarding question 1A.
Not so much regarding question 1B.
Back to avenger's are still weak or are on par with the other strikers now.
To be honest I haven't seen many avenger builds at WotC CharOp that claimed outrageous DPR. OTOH, I have seen rangers, rogues, dual wielding fighters, barbarians and who knows what else. Some of those builds are no longer viable or were nerfed some time ago. To conclude this arguement I would want to see some hard evidence. Like (at least) 3 different melee builds for each melee striker class. With at-will dpr calculated at lvl1/6/12/16/24/30 and additional infos like nova turn, build strenghts and weaknesses. ATM we are talking about what we guesstimate is going on which is not a very solid base for deciding wether class x is fine or not.