I have a brother mfc-j625dw and it's in the list of AirPrint printers under brother in the iOS: AirPrint 101 website but I cannot print from my ipad2. Why?

I have a brother mfc-j625dw and it's in the list of AirPrint printers under brother in the iOS: AirPrint 101 website but I cannot print from my ipad2. Who will i beleive, the website or brother? I checked the iOS AirPrint 101 website first before I bought my brother printer model to make sure that AirPrint is available but it does not work. Of course the brother printer salesman said that my model can do ipad2 AirPrint just to sell the unit. So I made sure that it is possible first so I went to check it in iOS AirPrint website and when I saw the model in the list, I bought the brother printer immediately. Why?