I don’t think you should look at it that way. Unreal Engine is far from being easy to use… it’s not Vray.
Anyone could try using it but without spending hundreds of hours testings things and improving you will not get to a decent point. A real time rendering engine is way less forgiving then an image, not to mention VR.
You don’t have to worry, just do the best you can to improve your work and you’ll be rewarded. It’s that easy.