bank-wired western union?

I thought western union was all about going to an WU agent drop off money they give you a number, you give them name of the person to transfer to and state/country they live in and the other guy goes to an agent on his side and give number+id to retrieve the money.

What is bank-wired western union and how is it different from from the going to the agent method for buyer and sellers?

can some1 please explain this to me.

 

With a Bank Wire, you need the other persons bank information, it's more or less like a bank transfer.