Those logs would be even better with SE.
The easiest way to track this is to look up how many drain cycles is being cast. How much the lock stood still with 0-1 shards unable to drain properly? How much Contagion uptime lost?
Check on shards gained from SC, and when did they come - with a few lucky procs I can easily find myself sitting at 4 shards, doing 2xUA and still at 4. A few seconds later I'm at 5 in the middle of a drain, and I need to do a suboptimal 3xUA drain cycle just to not overcap.
With SE, you get a miniscule damage from another 35% agony the whole fight, but the point is the increased shard generation, but this generation is a lot smoother than SC's luck.
(I hate luck)
On the downside, SE is a lot easier to fup by positioning. A maximum crit from a 10xAgony on SE is not much more than an average hit from Corruption, so letting it drop is not a big waste.
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You don't play with SE properly then.
Just maintain Agony on it and nothing more. Ofc you have to find a good position for SE, but for Elisande and Gul'Dan you can drop it somewhere in the middle and you can reach it from everywhere. Chronomatic Anomaly is not a good boss for SE, tho.
The main point of SE is the shard regen!