Let's play a game: Save the Ancients!

[LilimoLimomo]

Well, we do know that the researchers of Elpis come running to him to subdue any creations that are running rampant and he quickly puts them down when needed.

I think you may be misremembering. A researcher does come running to him when the lykaons (muscle-wolves) become violent, but not to ask for his aid, but rather just to let their superior know about the situation; this same researcher lets Hermes know that their colleague will unmake the creatures:

I had just fed them myself, and the okyupetes were keeping a wide berth. It is the nature of the lykaon that is to blame. Their innate viciousness.
Temperament aside, it is an outstanding creation, perfect in form and function.
Though it may not be suited for release, I've no doubt that the bureau will accept its concept for preservation.
In any case, there's no point in postponing the inevitable. Doros will revert them all once the paperwork is in order.

Unsolicited, Hermes interjects himself into the situation because of his distressed feelings about the deaths of these creatures.

Source: https://ffxiv.gamerescape.com/wiki/Aether_to_Aether

In addition, he fought WoL (who would go on to defeat the Keywarders of Pandaemonium, who are all immensely powerful mages recognized by Lahabrea himself), Emet-Selch (Hythlodaeus knows of no mage more powerful despite regularly bumping into the best and brightest of Amaurot), and Venat (a former Azem who once stopped a cataclysmic meteor and more or less laughs off her successor fighting a volcanic eruption turned into a creation). Yes, the security measures of Ktisis Hyperboreia weakened his opponents, but Hermes is not to be trifled with.

If I'm trying to be objective, I don't think this provides us with enough information to move the needle one way or the other. As you mentioned, Ktisis Hyperboreia weakens his opponents, and since we don't know by how much we can't learn much about Hermes' strength from that.

To put it in mathematical terms, what we learn is the inequality:

(EMET + WOL + VENAT)/HYPERBOREIA > HERMES

Since HYPERBOREIA could be any value between 1 and infinity, it doesn't get us any closer to understanding the value of HERMES.