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Originally Posted by Kincaid
Also, slightly off topic, I believe that mathematically, the level based resistances are supposed to be equivalent damage reduction to glancing blows now, aren't they?
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I think its very different in total.
Level based resists (at 60) are 8 resist to all per level difference. That is 2% damage reduction per level on average.
At 70, it is untested whether it remains 8 resist to all per level, or remains 2% damage reduction per level.
Assuming its the worst, 2% per level, caster total dps loss per level is:
same level, 5% loss to miss rate, 0% loss to level based resists. Total, 5%, 4% mitigatable by %hit gear.
+1 level, 6% loss to miss, 2% loss to resists, Total is 1-(0.98 *0.94) = 7.88%, 5% can be recovered with % to hit
+2 levels, 7% loss to miss, 4% loss to resists, Total is 10.7% lost; 6% can be recovered with % to hit
+3 levels, 17% lost to miss, 6% to resists, Total lost is 21.98%; 16% can be recovered with % to hit
+4 levels, 28% lost to miss, 8% to resists, Total lost is 33.76%; 27% can be recovered with % to hit
+5 levels, 39% lost to miss, 10% to resists, Total lost is 45.1%; 38% can be recovered with % to hit
http://www.wowwiki.com/Formulas:Spell_hit_chance
Melee is more complicated. There is both miss rate and glancing blows. In addition, % to hit in an off-hand weapon has a higher cap. Furthermore, yellow attacks can't glance (there are no spells that can't be resisted or miss).
Calculating the total damage lost as levels increase for a melee class is much more difficult. But lets take a pretty bad case, a Warrior with a 2H weapon with white damage. In this case, against a +3 target 40% of hits are glances for 25% lost damage, a total of 10% lost damage. If the base %miss rate is less than about 14%, melee gets less damage "lost" than casters for level 63's in white damage alone.
But it is far more complicated than that since there is a "crit cap" and the effects of %hit gear are larger for melee than for casters.
http://www.wowwiki.com/Formulas:Weapon_Skill
As for ranged? No glancing, just miss rate. And the miss rate for a +5 mob is no where NEAR 39% like it is for casters. I forget the number, but I believe its in the teens of % lost to miss.
If there were a raid boss that was a +5, casters would be almost useless, with stacked %hit gear (15% of it) they would be ~2/3 dps effective compared to equal level.
Melee would have a huge chunk of white dps gone, but would still do reasonable 'yellow' dps.
Hunters would be only slightly worse off ( a few %) than with a +3 target, and could still reasonably reach the %hit cap if they really wanted to.
No, the caster level based resists and melee glancing blows are not the same magnitude as levels rise, they are just both things that you can't remove with gear (+skill on melee, or -resist on casters don't work).
The %hit per level tables for melee and casters are very different as well. They might both be ~5% at equal level mobs, but by +3 and +4 mobs the difference grows pretty large. Furthermore, casters have no attacks that go around their miss/resist mechanics such as yellow attacks.
It would make a lot of sense to me for mechanics changes that in general make all classes lose the same ammount of damage as target levels get higher. This would allow for +4 or +5 boss level raid encounters that are dangerous, but don't imbalance the classes. As it stands, you'd want all your dps to be hunters and maybe some rogues in such a +5 situation (though stacked +%hit warlocks and shadow priests would be weak but not impotent since they can get an extra +10% to hit in a talent -- that would be gone at a +6 target though).