I'm pretty sure that's what she was saying as well -- they have the ability to do so but there's absolutely no reason to do so. What Jinko was basically saying they didn't have the ability to do so (incompatibility) and she was correcting that as while what you said is true, what she was mentioning was this:

http://en.wikipedia.org/wiki/Crystal_Tools

The features are more regarding graphics and cutscenes, not really an engine like Unreal.