TurboTax should be correct if you answered all the questions correctly. The broker's number only includes your "out of pocket" costs, not your out of pocket costs plus the compensation created by the sale.
Be sure to work all the way through the "Stocks, Mutual Funds, Bonds, Other" interview. Don't simply stop when you're done entering sales. At some point you'll come to a page where TT tells you how much compensation it has calculated and if it matches the amount reported on the W-2. Based on what you've said here the answer it "No."
Tom Young
