Demon World Energy
The Demon World Energy is capable to warp the space-time in a Universal scale,can create time paradoxes,can affect not only the present, but also the past and futureand is capable to warp the entire of the universe
In a alternate Universe, Mundus did used the Demon World Energy as his power source, which also replenish demons's demonic/magic powers ,Mundus did also corrupted the Human Worldand after his death, the timeline gets nuked
According to the Time Stop page:
''Unless users are shown or stated to have limits in terms of range, or that their ranges extend to areas beyond the universe, then they are assumed to be universal or higher by the virtue of affecting the very flow of time itself, thus all of time in the universe.''
Unless you can prove that they are not affecting the entire Universe and only parts of him, than the Demon World Energy is considered to be affecting everything on a Universal scale, and thus, making all the Demon World Energy's abilities 4D by nature.
Demonic Energy
Demonic Energy, which is the main source of power of the demons in the verse are 3D instead of 4D:
Since as show in DMC5 that makes clear that the Demonic Power (The regular one) comes from the Human Blood, which completely contradicts DWE and DE being the same since DWE existed ever since DMC's genesys, when Pluto separated the Worlds and demons getting fraction of powers from DWE, still don't make DE 4D, since they are getting only a tiny portion of that energy and not everything.
So nothing is 4D?
Nope, the characters only have this scale of hax if and only if they bypass resistances at that level. While the demons don't have the DWE, they still resist its effects, which give them some 4D resistances, which means, characters that can hax them even with they having resistance from DWE, should scale.