There are reasonable, practical limits to the agent power available to a given person.
If I'm sawing wood I could compare a knife to a handsaw, to an electric saw, to a table saw, to a team of woodworkers, to a factory, etc.
It would be totally reasonable to compare the amount of wood I'm able to saw by hand vs electric or any of the other methods.
The start of this discussion was that I multiplied wall-clock time and number of agents and someone argued that I should not have done this. It is of course reasonable to compare how much a human gets done in a certain amount of time vs what an agent gets done in that time. But if you start increasing the number of humans or agents, you have to take that into account. Running one agent for ten seconds is not the same as running a thousand agents for ten seconds - except for the completion time - but it is comparable to running one agent for ten thousand seconds.