Khun Dang is really strict on Kob, and PJJ lakorns are extremely way off thai tradition in respect, so even if PJJ asked for Kob, Khun Dang has to take into consideration. Even if Kob's lakorn's get high rating, you can't expect it to get awards also. As for rating most people watch it for the actor/actress. For lakorn awards they look for plotline, acting, directing.
As for Noon all awards she won for 2005 was base on only one lakorn. Doesn't mean that if she play with Ah'Too again she'll keep winning awards for him.
People tend to think that it's PJJ lakorn so it's going to be great, but all greatness has a weakness also. For example, his lakorn with Mo and Brook.