The APEVIA X-Cruiser Black case,its confusing for me,need help

ok so im thinking of getting a APEVIA X-Cruiser Black case for my ASUS P5QL PRO Motherboard but the case specs are not confusing execpt for one,
here are the specsthe one with the confused face is the one im confused with,

Model No. ATXB8KLW-BK or ATXB8KLW-BK/420 (w/ 420w psu)
Case Material Metal
Color Black Body/Black Front Panel
Main Board Standard ATX / Baby AT / Micro ATX
Window Yes
Power Supply ATX 420W power supply (optional)
Power Supply Spec. AC INPUT 115V/230V - 60/50Hz
DC OUTPUT +3.3V +5V +12V -12V -5V +5VSB
420W Max
Combined
Watts 28A 40A 18A 1.0A 1.0A 3.0A
420W

Power Supply Connectors 1 x 20/24pin Main Power
1 x 12V (P4)
4 x Peripheral
2 x Floppy
Drive Space 4x5.25" / 2x3.5" / 4x3.5" (hidden)
Motherboard Size up to 11" x 12"
Expansion Slots 7
Front Panel Switch Power / Reset
Front Access Ports 2 x USB 2.0, 1 x Firewire
Cooling Fan Space Up to 4 x case fans:
2 x 80mm fan - front (optioanl)
1 x 80mm UV blue LED fan - top (included)
1 x 80mm UV blue LED fan - rear (included)
Front Thermometer 1 x LCD Temperature Display
Front Fan Controller 1 x Fan Speed Controller (controls up to 5 fans)
Led Display Power / HDD
Shipping Weight 17 lbs (w/o power supply), 20 lbs (w/ 420w power supply)
Dimensions(DxWxH) 19" x 7.75" x 16.85"
Cu'ft 2.36'

notice the specs have a Motherboard Size up to 11" x 12" ,THATS THE ONLY CASE IVE SEEN THAT HAS THAT,the other cases i thought look cool DIDNT have a Motherboard Size spec,so what does Motherboard Size mean?

P.S. the ASUS P5QL PRO has a ATX Form Factor and the case CAN have standard ATX(ATX)MicroATX(mATX)and baby AT.so doesnt the ATX size/spec ONLY matter?

Case:ATX/mATX/baby ATX compatible
Mobo:ATX FORM FACTOR(Standard ATX;ATX)

so the ATX is the same but what about the Motherboard Size spec?

P.S.S.The mobo size spec is Motherboard Size up to 11" x 12"

I'm pretty sure the X-Qpack doesn't accept full ATX motherboards. As it looks on newegg, and from using them personally, I'm pretty sure an ATX board will not fit in there

well will a Thermaltake Soprano Black support that board?the mobo specs are Motherboards:Micro ATX , Standard ATX
heres the link for the specs:****://www.googlebb.magicmicro.com/description.asp?iid=1032

I'd recommend anything except anything made by Apevia, they look nice but the quality is pure sh*t, I ordered 2 of the X-Navigators about a year ago and within 1 month both front panel covers were busted off with normal use and 1 PSU went up in smoke and the other just quit working and after taking it apart the metal covers over 4 of the caps were missing.