One of the top coaching institutes does the advertisement after every exam

One of the top coaching institutes does the advertisement after every exam “Every question is from our notes. Our notes are the gold standard”. But when I checked the previous year’s questions, most of the questions were not in their notes.
But , why are they advertising like this?

No matter which coaching institute claimes that,the knowledge/notes conveyed by them is same.the approach might be different .

It’s left to us to apply that knowledge to solve those questions…

Questions from their institute is for practice adds for our preparation

DAM(S)N it

East or west Our notes are gold standard