If it is true, which means only 40% of the applicants follow the document submission rules and format. For instance, people submit experience certificate without mentioning job duties, hours, and salary; thus, obviously it will be rejected. Another example, if immigration asks birth certificate, they will submit passport copy to prove birth date. In summary, you do not have to decide your case based on the others rejections.
In my opinion, Just follow the submission template and you will reach the goal.