As far as I know, Asrock is left over/cheap asus..? but I haven't looked into it, that's just what I've been told previously.
Honestly mobo's aren't important though man, just find an asrock/asus/gigabyte/whatever one that fits your CPU/ram and has enough expansion for you, the extra bells and whistles mean VERY little.
To be honest with your budget gaming PC there's nothing wrong with cheaping out on the mobo (assuming AsRock is cheaping it), generally if you're going to upgrade anything excluding the GPU, you'll just buy a new mobo/CPU/ram and probably a GPU, so if it does the job with your current hardware, it's more than enough