working on my m2u implementation for UE4. That means a Plugin on the UE4 side that listens on a TCP port. The maya implementation will then send the commands to that port. Testing stuff in the python shell here. I think I can post a video with maya->UE4 action within the next week. :)
Here's a shot of both. SD on the left, UE4 on the right. In UE4 the colors are much more vibrant and varied, darker, and has much more intense normals. This is from the default sidescroller project in UE4, with the material replacing the ground. Here's an image of the base color map below for reference.