I am not normally one to jump on this, but I feel like that post is absolute BS, or there is a lot more you're not telling us. Given that your BST's accuracy was abysmal, they could not have been hitting the majority of their Ready moves. Now, my gear isn't exceptional, it's about mid-tier, and I average about 3000-4000 with Razor Fang. If they have dated gear without things such as Pet: TP Bonus, Pet: Attack, and Pet: DA, their numbers are going to be lower. I also land (and this is an estimate) about 80-90% of my Ready moves, depending on whether Torpor goes down at that time. Assuming he had roughly a third of that rate, there's no way he should have outparsed the SAM, let alone the SMN, short of your SAM there being absolutely crap.

If he were at 90-100% Accuracy and had up to date gear? I could totally see it. The biggest limitation to SMN is a 30-second timer for Rages. In addition, to skillchain with your pet you'd have to be in melee range, and hitting something in Sinister Reign is not the easiest task for melees who actually gear for their own accuracy. So if they're not skillchaining and they're just using a BP every 30 seconds, they're going to fall behind. We have a well-geared Nirvana SMN in our linkshell, and we see things like 11k physical pacts, 6-9k Impacts varying with the situation, etc. So let's use an average of about 8k/30 seconds, or something like 2.6k/10 seconds. My BST, comparatively, would do on average about 3.5k/10 seconds. Someone hitting with a third of my accuracy would do far less, and there is no way that they would have kept up with a competent mythic SMN.

Of course, this is all theory and I could be wrong, but your argument makes no logical sense with the situation you've given us.