Did some checking on logs last night, and feather and spark had almost identical uptimes on most of the fights I had checked. Even with the massive strength proc (that you only get for 2 seconds for max stacks, and have to half at least half the stacks for it to be almost equal to spark [H]) I still stand beside primordius/spark being bis for 2h without a doubt
Where is this math?
Assuming the exact same uptime (which is what he said) we will look at avg str over the proc duration.
(522) feather averages out to 7331.5 (avg) str for the duration of the proc, while (522) spark is 7333. Do with it as you will.
Feather math;
Each second of the proc you have below
1333
1333
2666
2666
3999
3999
5332
5332
6665
6665
7998
7998
9331
9331
10664
10664
11997
11997
13330
13330
Totaling 146630
146630/20= 7331.5 avg Str
Ya except they buffed the feather and those numbers are wrong.
ahh, I only have the TF version so I took the tooltip off of wowhead as truth...
It works out to 9163 avg str, which puts it ahead of 535 spark which sits at 8279 str. (assuming exact same uptime again)
new numbers below
1666
1666
3332
3332
4998
4998
6664
6664
8330
8330
9996
9996
11662
11662
13328
13328
14994
14994
16660
16660
totaling 183260
183260/20 = 9163 avg str for the proc duration
You can just multiply the amount of strength given by one stack by 5.5 to get the average.
ye, checking logs both spark and feather seem to have about a 30% uptime (as unholy). Main problem with spark is it not proccing on the pull, but tbh that's not a massive deal when it comes to aoe-type fights anyway.
Im playing 2h frost untill i get a bit better gear and normal spark is doing wonders for me, its lining up with fight specific dmg increases on fights like jin'rokh HC and Ji'kun HC perfectly every time, having that extra str during those high % dmg increases gives such a high burst and its easy to line up your own cooldowns with it, the only negative side is that its never really proccing together with my other trinket so cant stack that aswell.
It has it's uses, all trinkets do, but overall, it isn't the best trinket you could have.
It'd be a better trinket if it turned you into a drakkari berserker hulk thing.