Kyle, I had a look randomly on those flights and MOST of them are bellow 28,000 feet filed. The only exception is SkyWest at 33,000 feet KMSP-KAPN i.e. Air Canada, for example, is flying them bellow FL280 as are most European operators. I really think that in the real world they do not go above 28,000 feet usually. I do not know what to say except for what has been said already. I am not CRJ2 pilot, but I've seen the almost everyday as well as their pilots. I know there are real world CRJ2 pilots active on another forums, please search and try to get in touch with them. Regards Horani