There's a misconception that the broker is a hired gun, working for either the buyer or the seller. While it's true that the seller pays the broker's commission, in fact the broker has a legal duty to the buyer and seller alike.
Just because sellers pay the freight doesn’t mean that buyers get the short end of the stick, or less attention.
Brokers act as trustees. They must work justly and in good conscience in the interest of both parties; are duty-bound to act in good faith; and must make full and complete disclosures.
The broker wants both parties to walk away satisfied, feeling that they entered into a mutually fair agreement. It’s not about one party winning and the other losing.