User blog comment:BunsenH/Double Reebro/@comment-25404524-20170814054524/@comment-24577221-20170814171123

They're in the same general range, definitely, but it's much too early to know for sure. In these experiments, the monsters that are faster to breed/hatch have their stats higher while things are running than when things wrap up, just because it's necessary to wait for the slower monsters to finish up, so to speak. The difference is high at first, and gradually decreases as the experiment progresses. That's what I seem to be seeing at the moment.

If the chances are 11%, then about 1/5 of the "minions" will have an Ethereal in either the breeder or the nursery or both, at any given time. Or to turn it around, for each "minion", there will be an Ethereal in one or both structures about 1/5 of the time.