Yes. Alberto and Quadraxas are right. A7 is balanced and easy to learn. I know that and mentioned it a dozen times. And I am excited about easy to use tools and good workflow. So Alberto made a good summary:
- Lawmaker has a very fast level-editor plus fast shadow-mapping
- GC has fantastic support of lots of models and shaders right from the start
- C4 has fantastic real-time material-editor with best shader support of indie engines, good level editor and fast scene management

This is the story from the view of an artist.

But as a programmer (actually I am only a hobby artist but a professional programmer) I know that C4 needs more lines of C++ code for a simple game. Irrlicht and Ogre need only little code to start something. Lawmaker did not have best documentation for programming and was told to be unfinished at that time.

I know and talked about both sides of the story. I am not a fanboy of a single software. I just like to mention good things in the world out there (I am male and like modern technology ). It can open your mind, you can find new solutions or just get ideas.
If somebody takes this personal then he/she took me wrong.