@Hornet
Because you don't have to wait for your render, you're constantly in your render as you work so as soon as you throw in some smoke or particles or lights or bokeh, whatever else, you just position your camera where you want it and you're done, render complete!

That's what attracts me to it as a stills renderer, that, and the fact that it has features even raytracers don't seem to have.  For example the bokeh and abberation effects in Unreal are probably the best I've seen, and they're realtime as well.  You shouldn't let that bunch of nodes scare you because like I said, the way it's designed you can be hidden from that and only ever touch it if you want to do something deep.

The guy in the video is showing it from a game developer point of view, so don't let that scare you.

@aeilkema
Ok, have you thought about it this way...

If you were to load poser content into Unreal, how much more enjoyable is that going to be when you do not have to wait for a render because you're in the render?  When you have live bokeh, DOF, motion blur, smoke, fog, smog, lights, rain, particles, swaying chains, cloth blowing in the wind, all at your command, all movable in a mouseclick?

Remember, Unreal has a marketplace just like Poser and DS does, so it's just as easy to use ready made content in it as it is in Poser or DS.  You don't need to get technical with it if you don't want to.  If a person can load a figure, pose it, throw in a few effects and not have to wait for a render, what's so hard about that?

I haven't found it difficult to do anything I've tried so far and I'm pretty new to it.

Just to give an idea of a small team using it (one person), here's an animation someone made using the old version, all they did is use it as an animation tool, just like Poser or DS.

Click for Dystopia - a budget short animation using even the older version

How long would that take with Poser or DS?

@Vilters
Yup, I think getting it licenced to be used inside the Poser viewport would be amazing and would be the best way to keep ahead of this stuff for Poser.  I'm just dreaming I suppose, but who knows, it's not like Unreal don't want to licence their product out so it just might happen.  Not only that, if Smith Micro don't do it, I'm guessing DAZ might come along and snap it up for the DS viewport instead :-D

Assuming they already haven't in secret.