The Q are little brats and quite powerless when it comes to the beings in the Perry Rhodan series.
To quote wiki:
To all life, an evolutionary theory called the "onion-shell-model" is employed. It states, that there is a continuous evolution from lower life-forms (bacteria) to higher life-forms like intelligent life and finally bodyless entities. Upon invention, the onion-shell-model was used by the authors as if there are definite and discrete stages in cosmological evolution. However, later in the series further life-forms, representing stages between the known shells, were introduced.
The main shells are:
intelligent species, that have contacted other species
cosmocrats/chaotarchs (high powers)
The Q would be merely a superinteligence species, cosmocrats and chaotarchsare a few whole levels more powerful, they rule EVERY universe.
As for technology, Rhodan's humanity itself has ships of immense power, a single one of those that can totally wipe out the Borg without breaking a sweat, or being in danger for one second.
I don't know, the Q probably in the Rhodan high powers category..their power ranged from the beginning of the universe to some realistic speculation on the future. Still, I have problems with intelligences/powers than range through multiverses...the physics involved are likely a limitation on such species.
When speculating on the future, I try not to go as far as including such all-powerful entities, though I don't mind speculating on hyper-advanced species within the technological realm.
Like the Culture, most stories written with species of such powers have to be done so with them on the periphery, otherwise its hard to write any drama in them..same with species even on the Borg level, at some point you have to de-power them in some way or reduce the threat, or you can never use them.