We have seen so many posts about how Qubool Hai TRP's would be doomed after KSG's exit, how RV'entry has salvaged the TRPs and turned the show around, how Surbhi has carried the whole show and ensured we get good TRPs - hope I did not miss any fan group :). And, I absolutely do not deny that all these stars have done great job - KSG was a dream-like and great Asad, RV is doing pretty well now and Surbhi is as wonderful as her fans believe her to be. I don't watch this show (except an episode or 2) so I completely trust fan's evaluation.
But, Superstardom on TV and movies are inherently different. If I pick up Srk, Amir or Salman for my movie, I can automatically dream of a bigger budget and an even bigger promotion for my movie, can take more risks as these stars guarentee an initial, they guarentee that people would notice the movie - and more often than not, in terms of business, that would suffice.
But that's so not true for TV. All Top rankers on forum are those who once graced a youth romantic show. It doesn't really mean anything in terms of maximum reach, popularity or talent - just that who has the largest set of dedicated teenaged fans. We take these ranks for superstardom. But the truth is - on TV - none of these stars can guarentee an initial, let alone consistently high TRPs. It is the content, the storyline, the leads and the supporting cast as a complete package that determines a show's fate. The fate of the rival show with another TV superstar should prove that point (at least about initial)
Look at the top rated shows - which are doing so well. How many of them have top forum-rankers? Yet, these are appreciated and day after day people tune in to catch up.
People on forum ridicule TRP Aunties but somehow I understand and respect their choice more. Diya Aur Baati, Balika Vadhu, Jodha Akbar - they all represent the dreams of today's Indian woman fighting for an identity beyond love and marriage; of carrying her own identity, her own dreams to a life after marriage. The significant other halves in these stories are not intense passionate lovers who keep hurling abuse due to past pain but humane, supportive great guys who want their wives to keep dreaming, to keey flying. Not only these women succeed on professional front, they do so without giving up the pleasures of traditional family time / happiness. I don't watch any show as I don't have the time. But my struggles are the same - How to balance personal (kid, husband, MIL) vs professional (accolates, promotions, friends at work). And that's why these shows are able to survive non-stars, change of actors and actresses and still remain a top show with iconic female characters.
Qubool hai also has a female lead who has her own mind and identity (though her dreams are still limited) and is very loveable, there is good drama and storyline and very capable actors. So people watch this show. And would continue to watch as long as they get their complete package - irrespective of which actor comes in and who quits.
Disclaimer: I read a lot on forums but do not watch any shows on TV. So, might be a little off in my perception of various shows.