Crytek created Ryse in two years, it’s a cinematic game, beautiful. Epic has spent two years to develop UE4.
Sandbox is not easy to use, that’s why I decided to learn UE4, it’s easy, it’s a creative tool for , it’s a standard.
I think that Crytek and Unity are watching what Epic is doing, tomorrow all authoring software for games will have the same features.
Today the best tool available to create videogames (and not only) is UE4.