LMAO. Your blinders really are well fixed in place.
Umm... okay? With your opening rotation, in which you use Tri-disaster later, you would be in the same spot but with even longer cooldown on the Tri-disaster.
Just to be sure we're actually on the same page:
My opener:
Swiftcast Shadowflare --> Bio II --> Miasma --> Bio --> Rouse --> Spur --> Ruin 3 --> Fester --> Enkindle --> Ruin 3 --> Painflare --> Ruin 3 --> Ruin 3 --> Fester --> Ruin 3 --> Raging Strikes --> Dreadwyrm Trance --> Ruin 3 --> Tri-disaster --> Ruin 3 --> Contagion --> Ruin 3 --> (Aetherflow if/when available) --> Ruin 3 --> Ruin 3 --> Ruin 3 (or Ruin 2 if less than 3 seconds left) --> Deathflare --> Fester (if Aetherflow was available) --> Shadowflare --> priority rotation
Total GCD's: 15
Remaining cd on Tri-disaster after Deathflare: ~45s
Remaining cd on Contagion after Deathflare: ~48s
Remaining duration of dots after Deathflare: ~30/24/18s (the last doesn't really matter to your argument since it's instant cast)
Total duration of buffed dots: 45/39/33s
Your opener:
Quick Cast + Shadowflare>Bio 2>Miasma>Bio>(Garuda) Contagion>Fester>Ruin 3>Ruin 3>Fester>Rouse + Spur + Enkindle (Aerial Blast)>Ruin 3>Fester>Dreadwyrm Trance>Ruin 3 (x4)>Tri-Disaster>Deathflare (aka TeraFlare).
Total GCD's: 11 as written, although actually 15 (You're missing either 2 ruin 3's or a ruin3+ruin2 in your trance, and there's dead space in between each of your festers which take at least 3 gcd between but you have less listed, so really your rotation has 15, same as mine.)
Remaining cd on Tri-disaster after Deathflare: ~60s
Remaining cd on Contagion after Deathflare: ~30s
Remaining duration of dots after Deathflare: ~30/24/18s (note that this is the same, so we both have 15gcd openers that have dots that linger the same amount of time)
Total duration of buffed dots: 30/24/18s (You are missing Raging Strikes in your list, so I assume you use it shortly before Dreadwyrm for the additional dps on both your Ruin3 spam and on your Tri-disaster.)
I.e. Both rotations would require hard cast refreshing dots at the same time, since both Tri-disaster and Contagion are on cooldown. The difference basically is that your opener trades 15s cooldown of Contagion for 15s of cooldown of Tri-disaster at a cost of losing an additional 30% dps on your dots for 15s. And my opener appears better set up to have Tri-disaster and Contagion always line up for ready application of long duration dots every trance, since the cooldowns are all lined up nicely.
Oh, I know. I was just was curious why you weren't using Contagion during the highest dot dps phase of the opener, since it's like an AST that uses a parser knowingly giving Balance to the lower DPS of the group.