User blog comment:B214/General Discussion/@comment-5.36.251.234-20170715201223/@comment-10330822-20170717004840

That depends on the Satan. Satans such as Sirzechs and Ajuka are Super Devils, they are much stronger than the other Satans. Meanwhile, the Dragon Kings, who are below the Heavenly Dragons in power, several of them are considered Satan-Class, meaning that the Dragon Kings and those who are Satans or Satan-Class are considered in the same league.

Of course, since the Heavenly Dragons are considered more powerful than Dragon Kings, this would mean they are considered to be stronger than the Satans and Satan-Classes as well, especially those who aren't Super Devils.

However, when it comes to the Super Devils, we can't be sure. Ddraig reacted strongly to Sirzechs' true form, calling him a "true monster". So Satans like Sirzechs and Ajuka may be stronger than the Dragon Kings and comparable to the Heavenly Dragons. This is further confirmed by the fact that Ddraig and Albion, when they were free, would be considered amongst the Top 10 "Strongest Beings in the World". Sirzechs and Ajuka also occupy a place in the same list. However, whether or how they actually compare to one another is only speculation at this point.