c4 follows completely different goals, is much more hardware demanding
look here what you can read in the FAQ from C4:
"For Nvidia hardware, a GeForceFX 5200 or higher is required. For ATI hardware, a Radeon 9500 or higher is required. For Intel hardware, a GMA X3000 or higher is required."
I consider this a quite old system to run a game but not "hardware demanding".
it does not have the modular OSplayer-gamepack-design, no web player etc, and it never wanted to be like this.
true, but it supports some game consoles:
http://www.terathon.com/c4engine/faq.php#E2But at the end I agree with you. We can choose whatever fits best to our needs.