I also want to know, surely say the “UE” that theirs is better and the same in “CE3 / 5”, but I say what I think:
I think in the outer CE3 are the best I’ve seen, and “UE” and the interiors are the best.
“CE” exterior
https://www.techzilla.it/wp-content/uploads/2016/03/CryEngine-5-05-600x338.jpg
“UE” interiors
Now with version 11 of "U E" the players are very similar to CE3.“UE”
https://docs.unrealengine.com/latest/images/Support/Builds/ReleaseNotes/2016/4_11/image_2.jpg
“CE”
https://i.ytimg.com/vi/bmMU5yIVrLU/maxresdefault.jpg
Although the gameplay in “U E” appears heavier “for example paragon” in CE3 seems more fluid, players weigh less (better gameplay).
I think the two big companies have great power, what one lacks the other makes up for it and the same in reverse
I think if CE3 + “U E” join would create a monopoly for other companies.