More to the point, what mainboard is being used to determine the cooling capacity of the case, what CPU, what fan(s) how many fans, what video card, how much and what speed memory and all the other variables the can effect caae and CPU temps?
If I can find two mainboards that give me the same CPU temp and the same case temp at the same time under the same load, everything else being equal I will be very much suprised. Most of the mainboards that read temp from the built in termister in the CPU read considerably higher than mainboards that read from a seperate sensor in the CPU socket well.
With mainbaords that have the sensor in the CPU socket well there is a large variation in temps from board to board depending in the location of the sensor and whether or not it physically contacts the CPU.
If the case can only run at a 45 degrees C CPU temp with a VIA CPU, 128 megs of PC-100 memory and on-board video and sound in a 20 degree C room the case is probably a piece of xxxxxxx.
If the case can run at a 50 degrees C temp in a 30 degree C room with a high end video card, 1 gig of DDR 3200 memory, several 10000 rpm hard drives and assorted other cards and a retail heat sink/fan, it is probably a great case.
Just stating temperatures means nothing, state a temperature and the conditions leading to the temperature.