As a full ascended deity, he can Recreate the world to one of his wishes or other wishes. Ignore time shenanigan's like time reverse at point of someone powers never existed, time acceleration(something similar to clock up), time stop, etc. Reality warp that can bend and rewrite the fundamental laws of the world or the concept of Desire Grand Prox itself, that would be erased by the Grand End.
I see, does he have any hax to kill other gods/immortals? if not he probably stops at MG's cause they can't kill each other.
Mostly, yes.
Ace was capable to kill Mela and Suel, that are inmortal like all the people of the future that exist as information in the Metaverse and the death of they avatars in the present only cause the respawn of they in the Metaverse/4th Dimension, also they exist as information without a physical body and other things.
Geats is universe level because he reset the world into normal after defeat black geats.
Black geats not only affected present timeline but also future where humanity live in the space and he erase all of them.
Also in Geats & Gotchard Winter movie he also was able to reset the dream worlds created by X Wizard magic.
And in Kamen Rider Gaim is showed that the "dream worlds" like the one created by Lapis one of the Overlords of Helheim, are actually other time-lines in the Kamen Rider Cosmology.
And Mela or XGeats destroyed several worlds and kill several gods like Susanooh or Loki, in him World Destroyer Game
Main question is whether or not world in this case means only the planet or universe. And if his powers are equal to someone like Kouta(who has universal reality warping)
Yes, also Kouta warping was something above the "universal" level, considering that all the mess up of Saver a fake man of begining was capable to exist in every iteration of the Rider worlds/mulitverse and even above after use the Saver system, even in the ones that aren't Gaim worlds and Kouta just rider kick him and call it a day.
Mela, the main villain of Geats movie is a god killer dude from the future, he had a list of gods that put Ace and Kouta in the same level also, after kill a god Mera destroy his world and even the death of Baldur means the end of all the light in that Time-line.
@Eztephan calced geats at some level of rel-ftl too from dodging lightning. As for time stuff. Even you believe that guys like Accel or aleister can kill him, they don't have any defense against time manip.
It's only once you get too Alice and MG tier you get chars with time manip abilities.
That was only Boost MK2 Geats and after that Geats had like 3 or 4 power ups.
The biggest high end speed feat and PS are those:
EoS Ace as a deity trascended time itself in his own words ignoring the Time Reverse and Time acceleration of Suel.
Other deities like the Man of the beginning and the Woman of the beginning can travel in the time or to other time-lines by sheer speed and also that Kamen Rider Saver thing of exist and move in any time-axis at the same of Gaim novel.
