If this says it's an ATX case, then why does the product description say it's a microBTX?

http://www.amazon.com/Cooler-Master-Elite-Tower-Black/dp/B001KZ2E80


Please tell me what it is...If this says it's an ATX case, then why does the product description say it's a microBTX?
The Cooler Master site says micro BTX in the spec so they just copied that. Cooler Master's site also has the ATX logo. Just looking at the motherboard mounting holes I would assume it handles at least 3 different sized boards.If this says it's an ATX case, then why does the product description say it's a microBTX?
Advertising copy error.