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.
I've read most of Perry Rhodan up to the 2035's (took years o_O) and there's no comparing the Q with a Cosmocrat, they're so vastly beyond everything humans can even imagine that they can't usually directly communicate a life form at human level, they'd have to create a sort of avatar for that which is by all means still more powerful than anything else in the universe(s).
The Q would be a super intelligence level species at most, but they're, from what we've seen in Star Trek, too limited in what they can do, the SI that keeps an eye on us humans has an influence sphere that spans the local group in this and other universes and controls several dimensions attached to these universes.
Its powers aren't displayed in the ways the Q, they're much more subtle, but on occasion they do things like absorbing an entire species to save them from extinction, also they're not beyond creating pocket universes and planets as they see fit.
As for us, we're quite badass, we've got 100,000 sphere shaped space ships each 2.5Km in diameter armed with 60 Transform cannons with a yield of 4000 to 6000 Gigaton TNT each, they shoot bombs via hyperspace and there is no traveling time, click=BOOM, planets or even the ship itself are no obstacle, hiding behind a planet doesn't work, the bombs dematerialize and then materialize inside YOUR ship, imagine 60 x 6000 Gigaton TNT exploding inside your ship...
Shielding is such that a ship can fly through a star if needed, they also have cloaks and can land on planets, imagine finding that in your backyard, hull materials are imune for antimatter and melt at 96,000c
Acceleration of a 2.5km ship is around 1000G's, FTL speeds are for the normal engines around 40,000 to 100,000 times the speed of light, specialzed Dimesexta 6D engines made it possible to reach the Sombrero nebula within weeks.
Powersuply, NUG Black shield reactors 225,000 Gigawatt per reactor, there are at least 12 of them on board.
We humans can place a shield around the entire solar system and if needed displace it through time so we're a little ahead of the rest of the universe.
Marco Polo which is a 2.5Km sphere ship.
A later ship, the 14Km long BASIS, mean little thing...
Its almost not possible to compare any SF series to Perry Rhodan, the story arcs sometimes span years in writing and 40.000 years in in universe history, the vastness of it all is beyond everything else in SF, it spans 51 years now and they're still writing it, the "universe" they've created is mind blowing, the characters, the technology its all HUGE.