And you've done quite a bit to your cooling system, no? Is it going to hit 103F today in your town the way Vegas will? How about humidity? ;)
I mean, apples and oranges amiright?
Like I said, a cooling system CAN be made to work anywhere/everywhere. But running in an enclosed space is a tough task which takes proper design to overcome. Stock-like cooling capacity is not going to overcome that challenge, especially with a crank driven fan.