I only believe boi & indicine.
If you have seen Bollyarena then you would have noticed they copied all data from indicine even the format.their qna was the most funniest thing,they were answering like a fansite with no fact,they have almost no significant source then they stopped qna.
Now they are copying estimate from boi &news from other sites.
That doesn't mean they doesn't know anything they are better than addtoday, talking movies and others.
But my list is according to current performance is like this
Bollyarena in one of its article said after judwaa2 varun is biggest after khans.
Could you believe it.