crit/mp5 on gear.

[Gerina]

so after checking up some maxed out paladins who are aperantly gearing for mp5 instead of crit, although alot of others are not, I wanted to make a theorycrafting list why one would be better for another.

first of all, the amount of casts per minute on average for each spell, This is simply checking the logs.

76 casts / 362 sec.
70 casts / 532 sec.
65 casts / 420 sec.
+ = 206 casts / 1314
9,5 casts per min for HL

96 casts / 362 sec.
148 casts / 532 sec.
126 casts / 420 sec.
+ = 370 / 1314
17 casts per min for FL

46 casts / 362 sec.
59 casts / 532 sec.
40 casts / 420 sec.
+ = 145 / 1314
6,5 casts per min for HS

9,5 HL
17 FL
6,5 HS

55,2% crit for HL
45,8% crit for FL
58,6% crit for HS

30% of base mana cost returned per crit:
1274 base mana for HL, 30%= 382,2 per crit
308 base mana for FL, 30%=92,4 per crit
791 base mana for HS, 30%=237,3 per crit

1% crit would be:
36 mana/min for HL
16 mana/min for FL
15 mana/min for HS
67 mana/min for all
5,583 mp5 for 1% crit

on gear 0.6 mp5 = 1 crit rating

46 crit rating = 1% crit = 5,583 mp5
46 crit rating = 26 mp5 on gear.

1% crit however also gives the chance to heal for +50% meaning for every 2 crits you'd get half the mana back.

1274/9,5 9,5*0,01*637=60,5 mana per min for HL
308/17 17*0,01*154=26 mana per min for FL
791/6,5 6,5*0,01*395,5=25,5 mana per min for HS
total =112 mana per min from crits = 9,3 mp5

this means 5,583+9,3=14,9163 mp5 for 1% crit, versus 26 mp5 from mp5 on gear. meaning for regen purposes mp5 is better but for burst crit is better.

if you think i miscalculated please tell me and if you think i am not casting enough Holy lights versus the others then please don't because my guild does not use assignments meaning we're free to heal everyone and casting holy light when i need a quick heal on a random raid member instead of a slow heal with 60% overheal then i think its an easy choice. (and don't comment on the assignments part either)

[Xentin]

Pulling from WoL on our last Heroic 25m Northrend Beasts kill a week or so ago I have the following using real world data:

8 min fight duration

168 Holy Lights cast
50 Flash of Lights cast
11 Holy Shock cast

75 Holy Lights were crits. (~45%)
22 Flash of Lights were crits. (~44%)
7 Holy Shocks were crits. (~64%)

So if I were to add 1% more crit for that fight I would have had the following:

2 extra Holy Light crits
1 extra Flash of Light crit
Doesn't affect Holy Shock since so few were cast.

The amount of MP5?

2 extra Holy Light crits = 1274 * 2 = 2548 * .3 = 764.4 mana returned
1 extra Flash of Light crit = 308 * .3 = 92.4 mana returned

764.4 mana + 92.4 mana = 856.8 mana returned over fight length from 1% crit.
856.8 mana / 480 seconds (fight duration) = 1.785 mana per second
1.785 mana per second * 5 = 8.925 MP5

Granted this is just one fight and in some fights I may cast more Holy Lights which may increase the value of the MP5 of 1% crit for me, however, even if I casted double the amount of Holy Lights (meaing 336 versus 168), I still would have only had a total of 4 Holy Light crits which would have still been only 16 MP5.

So as you can see, and as many superior theorycrafters have pointed out before me, crit is one of the worst stats you can stack.

Note: I double checked my math, but if anyone sees anything off, please let me know and I will correct it.

[harky]

1% crit however also gives the chance to heal for +50% meaning for every 2 crits you'd get half the mana back.

This is the biggest mistake I can see. The second you start treating crit in this way you must then fully model a boss fight and account for overhealing and many other issues. In my experience the extra healing from crit is generally wasted. Looking over my last few parses 76% of my overhealing was on crit heals with 61% total overhealing. So I figure about 35% of that '+50%' is completely wasted. So even if you wanted to consider crit as being worth mp/5 in this manner you'd need seven crits, not two for this to work out. With the very limited gain in output from crit and crit being worth half (sometimes less than half) of what MP/5 is... crit sucks. I value crit about as much as I value spirit. The difference is I can avoid spirit. It's bloody hard to avoid crit.