I agree this is a big advantage Epic has over Unity. For my current VR project I'm using Unity but as soon as I get the time I'm planning to seriously investiga

I agree this is a big advantage Epic has over Unity. For my current VR project I'm using Unity but as soon as I get the time I'm planning to seriously investigate Unreal. They were showing some really impressive stuff at GDC and a lot of it is driven by the needs of their own games. Availability of source is another big advantage over Unity I believe. When you run into a problem in Unity you're pretty screwed. At least with Unreal you have the option of diving into the source and figuring out what's going on so you can either fix it or find a workaround.