From everything I have heard and understand I think you guys are correct. Like you say as a business they want to take on as many candidates as possible to maximise their profits but also they don't take on everybody or they would have a high percentage of dropouts which could be misinterpreted as the school isn't great because if it was there would be less drop outs.
I think that you don't have to score super high marks but if you pass with good enough marks to show that you have a decent understanding of what is required of you as a pilot and that you have the potential to become one.
I'm mainly going through the pre-test guidance leaflet and doing some online tests. Its all quite straight forward it just takes a bit of time to get back into the swing of it.