I think why 30% is being cut is because I'm using a non US bank details. With Payoneer we get a US bank details and give our own address in approved countries. For me, Qatar is not in approved countries list. So I can't provide a address. This is the reason I have to give 30% while with Payoneer only 15%.
Anyways I am content to get enrolled and don't bother much about deductions.