Is less than half (2% of 6%) commission fair for buyers agent?

[Tyler Speelman]

Hello, 

I am getting ready to list a duplex for sale and before signing the listing contract I would love to get your opinion. The "Cooperative Fee Authorization" states "Seller authorizes Listing Firm to offer a part of listing firm's fees to selling firm. Said fee shall be divided: 4% of the purchase price plus $0 to listing firm and 2% of the purchase price plus $0 to selling firm." As a seller would you question this and renegotiate a lower percentage of purchase price (3% to listing firm only), or request it is a more even split? Would a 2% commission be a disincentive for buyer's agent? 

Any advice would be appreciated.

TIA!