As far as I can tell..."Super Joe" actually IS or WAS owned by Hasbro. And it's basically a spin-off of the ORIGINAL GI Joe, that came out right before A Real American Hero.
A tribute to Hasbro Super Joe figures which were produced from 1977 to 1978 replacing the GI Joe Adventure team
www.plaidstallions.com
3D Super Joes is always interested in buying Super Joe items with special interest in the rare and unusual. Single pieces or whole collections.
www.3dsuperjoes.com
GI Joe Home Page / 1970-1973 Adventure Team / 1974 Kung-Fu Grip / 1975 Atomic Man / 1975-1976 Life-Like / 1977-1978 Super Joe / Super Joe Adventure Team 1977-1978 Sales for the Adventure Team was s…
thetoycollectorsguide.com
The Super Joe Adventure Team was a smaller-scale, 8"- 8 1/2" figure that was produced partially as a result of the increasing cost of petroleum and partially due to the increasing popularity of the 8" figure line from Mego, a competitor of Hasbro. The line only lasted from 1977 to 1978. It was...
gijoe.fandom.com
So...I guess Power Comics did sort of get A GI Joe license. Unless Hasbro let this slip into the public domain. *shrug*
I've never heard of Power Comics, and I don't see a listing for them on Previewsworld/Diamond, so they MUST be really small. If their press release didn't mention that this was a "series", I'd guess this was basically just a one-shot for a Comic Con or something.