I read through that whole topic and couldn't find any mention of why RE is bad. The talent section only references BT and RC and doesn't mention RE at all. The dps section mentions gaming RE for blood runes (why would you do this? it's not really a dps gain in current gear for most dks from looking through a number of logs--their ds is hitting for 2x hs for nearly all of them). But there's no mention of why RE would make someone "stupid" for using it. Did I miss a section or is this discussed elsewhere?
If we chose our t5 based on DS/min then RE would be not only viable but optimal, but remember that it's not not how often you DS, but WHEN you DS. Take two DK tanks. One has a decent amount more DS/min but doesn't place his DS as well, and the other has less DS/min but places EVERY death strike after burst damage. Assuming they are both on progression content where tank damage intake matters, the second DK will always be more STABLE. The first might have have a slightly higher hps at the end of the day, but who cares about overall numbers? your overall numbers can be great but you can still die if you burst hard enough for ~3-4 seconds out of a 12 minute fight.
In order to time death strike right, we need to have an FU pair at the ready. If it takes you ~2-3 global cooldowns to react to damage then you're going to have a bad time, and if you spike with no FU runes with RE, that's whats going to happen. You need to hit RS enough to proc two times with RE to get an FU pair back, which means there will be many times you will find yourself unable to death strike WHEN you need to, regardless how often you do end up death striking. You could try to minimize the danger by only putting FU runes down when you need to dump rp, but with a (napkin math inc) 45% chance to proc and only 100 RP max you have at BEST a .45*.45+.45*.55 = 45% chance to get both back. If you were to try and dump RP with <90 RP you would be looking at .45*.45 = 20.25% chance that you get both to proc. So in summation, even with a max RP bar you still have a 55% chance that you will end up with xBxDxx, which means you cannot react with death strike for the next ~5-7 seconds.
And even if you get lucky, you are going to need 2-3 global cooldowns to get those 2-3 rune strikes out, which means 2-3 seconds from when you put the FU runes down to when you can DS again. Remember this little RP dump has to happen a LOT and you have to put both FUs down every time you do it, and if you cap RP because you waited on an FU pair to place a DS right, you've lost throughput which is the only possible argument for RE. So even though it might have the best DS/min, look at how much time you have to be without FU pairs and unable to react to any dmg JUST to get your t5 to give you death strikes back.
Now look at RC and BT. neither of them have the theoretical overall DS/min of RE sure, but neither of them require you to put your FU pairs down to get the benefit. Meaning if you are running with BT or RC, the only reason you would ever need to be without an FU pair is if you actually needed to use them both for timing purposes. This incredible in terms of DK tank stability and consistency, because death strike timing is SO much more consistent with either of these talents.
RC has a 45% chance to proc, and even though it only procs for 30% of a DS it only needs to proc once. Compare this to RE which has to proc at least 2 times out of a maximum 3 chances every time you have an RP dump. Assuming you had 90 RP. With RE you'd have a 45% chance to get your FU pairs back and a 55% chance that you'll be left with no FU pair. With RC you have a .45+.45*55+.45*.6975 = 83.4% chance to get a rune cycle shortened, on top of the fact that you don't have to put your FU pairs down in the first place, meaning even if you don't proc any you should still have an FU pair available.
So it's the difference between theoretical maximum DS/min that puts you at risk every time you need to dump RP or an almost guaranteed hastened rune regen that allows you to hang on to an FU pair for as long as you need to.
Now do you see why I left it out of the sticky? The explanation is fairly long and not required for 99.9% of the wow population. I'd rather explain it as it comes up for those who want a more in depth reason, and am happy to do that.
Also, I should probably remove RE for dps in the dps section. It's theoretically a gain, but in a dps build you should also have a ton of haste, which makes it realistically inferior to due even high level player imperfection.
04/29/2013 08:51 AMI was saying I wasn't going to take his/her advice mostly due to the lack of raiding.
Posted by Aziker
never let progression or guild rank dictate theorycrafting. I'm going to start raiding for the US #4 25m guild (#3 with exodus out of the picture), but i've got roughly the same level of knowledge as I did when I was tanking for fallout, which wasn't even top 130 us 25m. Sure i've learned a few new things, and found better ways of explaining old things, but my point is progression and guild rank has just as much to do with the amount of time you can afford to put into the game as it does with knowledge of the game, and if you limit yourself to only taking advice from people who are more progressed than yourself, you are losing the perspective of a lot of really intelligent players who maybe just can't afford to raid more than once a week with a casual guild.