I believe that figure refers to the income of an individual, not necessarily a household.
A married couple generally files jointly. The individual incomes are summed to get the top tax bracket. If the sum is over $92K, you get a joint taxation in the top 10% bracket.
The real pain of the marriage penalty happens as you do your taxes. I set my W4 as "0 exemptions, married but withold at the higher single rate". When I put my W2 data into TurboTax, there is a huge refund due. Next, I put my wife's W2 data into TurboTax. At that point there is a huge amount due to the IRS. In past years, the itemization of home mortgage interest and state taxes has shaved off a significant portion of the amount due the IRS, but rarely is it less than $1,000. The nitwits in the payroll office where my wife works can never get the witholding right. If they did, she would probably realize how bad it sucks to bring home a paycheck with $25K annual gross that is taxed in the $150K tax brackets. That's the joy of supporting the socialist government.