Go to unrealengine.com and poke around. I don't see the comparison. Now, if you could provide some things along these lines, tool-wise, then you got something.
If you need a way to describe that your engine allows for the development of complex 3d games then I would suggest you use the statement "Our engine allows for the development of complex 3d games". Nothing more needs to be said and comparing your engine with a far more complete and potentially superior gaming engine/toolset is misleading and inappropriate.
I would also suggest you allow people to download the SDK and try sample games without having to sign up for anything.
As a collection of tools and technology that we've worked on for the past 3 years we obviously don't have as wider range of features when compared to everything Epic has included in Unreal.
Different developers need different tools, and we will be adding more features as needs arise.
But I appreciate your feedback and will work it into the white paper when we next update it.