I only hope you are true to all these as my experience tells me that it is not always a sincere format but a means to lure people into signing up through affiliate links for their gains.
You don’t need to trust them on this as you can verify the provided information by yourself.
They list the bonus and the wagering requirement next to it. You can verify the accuracy of these information by reading the bonuses terms on the casino's website.
However, the wagering requirement is not the only factor to determine which is the best bonus offer.