Good arguments, now its time for me to put some (although not as organized as your): There's no much info about Ophiel's endurance besides having Use of Necessary Energy (that allow him to fight for 10 times more than normally someone without ki would) and being a Duk'zarist (they are considered to have "perfection physical", so sickness, poison and bleeding wouldn't do anything).
Can't say much about Haru, but Ophiel is prett experienced in battle and tactical, he personally is leading a mission of moving his agents (from Samael) to replace members of the Church; at the time, few agents are taking possetions.
Ophiel is not weak agaisnt Holy attacks, only the light attacks (is quite different is Anima), but yes, light attacks cause him double of damage. However, Umbra do not have issues by blocking lights attacks, it only suffer negatives when fighting in a place with considerable light (not quite a problem, since there´s few spelss thatmakes the environment dark).
Aside from teleportation, there's a few useful spells, like blinding (not quite blind inducement, but is can makes a large area dark, so beings are unable to see in there), two spells that allows him to directly destroy light or positive emotions based beings (not OHK, is not that powerful), hidng spells (most of Dark Magic is that) and few empatic ones (it do not avoid the target to stop attacking, but it induce rage or destroy the positive emotions, how that affect Haru I don't known).
