Getting around to testing the norm vs unique HP question
Testing normal act 4 river of flame urdars, who have 240-300 hp and 25% poison resist
Against poison clouds from catapults in act 5 hell p1, which are about 363 damage over 24 seconds (272 after resists)
If HP is 100%, it will either kill it in 1 hit or leave it with a sliver of HP. If HP is doubled, it will only take about half of HP. I'm using 0 blood oath in all setups, and spectral hit resists shouldn't matter since it adds no % poison resist just fire/cold/light.
First test case: bound trash mob urdar with 1 point bind demon, which does NOT gain a unique name/affixes (it remains a trash mob when highlighted). Result: he lived with about 1% hp, confirming 100% base hp
Second test case: bound champion urdar with 1 pt bind demon (300% base life in norm): lost about 25% of his max hp, confirming 400% base hp
Third test case: bound trash mob urdar with 85 bind demon gaining unique name/affixes (conviction aura): Result: he lived with about 5%hp, confirming 100% base hp
Four test case: same exact trash mob urdar as above, but this time I added 63 blood oath when joining the game (he had 0 when bond): the +79% poison resist rendered urdar immune to poison. Its not displayed on his name, but he was never poisoned, so at least 'that' is confirmed
Now some using durance urdars (160-200 base hp, 0% resist). Keep in mind norm difficulty uniques have 400% hp, as opposed to the 200% in hell
Now some other test cases, less onerous to test then waiting for catapults for some
Fifth test case: bound unique mob urdar (stone skin) from durance level 2 (160-200 base hp, 0% poison resist, 0% dr) and let him get hit by catapults: Lost about 25% of his max hp, confirming 400% base hp
Sixth test case: bound trash mob urdar from durance level 2, with 0 blood oath at binding, then applying 63 blood oath when joining hell game (+2220% hp), then let him just fight some lone fallen in blood moor hell (34-76 phys + 20% of 15-22 fire and 5% crit). So either he has ~180 hp or ~4176. Result: fallen killed the urdar in about 5 hits, proving blood oath did NOTHING to increase his HP after binding
Seventh test case: bound trash mob urdar from durance level 2, with 63 blood oath at binding. Fallen still killed the urdar in about 4-5 hits (!!!!!) Even though he was bound with 63 blood oath and loaded into the game with it, his HP is clearly the same, low value.
Okay at this point I should note I'm using 63 SOFT points of blood oath for these tests, with 9x +7 skills charm to it. Its quite possible that soft points in blood oath are doing nothing and only hard points work, because they used skill.blvl instead of skill.slvl just like they did for the redirection
So now another test for that case:
Eight test case: bound trash mob urdar from durance 2, with 20 blood oath (base level only). So 20 oath, 1 bind, 1 mastery. Lists +715% life. Result: Urdar still died in 5 hits
Ninth test case: bound trash mob urdar from durance 2, with 20 blood oath AND 20 bind demon to upgrade him to unique. Result: (after he kills a few): He still dies in ~4-5 hits
Alright guys I'm not fully answering all our questions but I am answering some, and asking new questions at the same time