Two reasons why WES needs a Bachelor degree:Yes, but only WES requires you to send your bachelor's document, no other agency.
Are there extra points for bachelor's degree? I was of the opinion, if you have master's u need to get that evaluated and you wont even be asked about your bachelor's when you apply,
1. For verification. A lot of Indians have procured a genuine Master's degree on the basis of fake Bachelor degree certificates. Something that has been going on for ages. Why do you think? WES allows candidates who did Masters from outside India to take the transcripts from the university and send it to them but enforces direct university courier on Indian university degrees
2. Many, what you call a Masters from India, are evaluated as PGD or worst Post secondary shcool Diplomas according to North American standards, that is why, WES requires you to send in your bachelor degrees so that you get points for "Two or more degrees", in a way they are doing a favor to you. For example, MBA's that are not from IIT or IIM is considered as a PGD and not a Masters.