This is not a bug. It may be an incorrect use of syntax or a limitation in the software. For further discussion on the matter, please consult the BYOND Developer forums.
Descriptive Problem Summary:
When you have commas (and/or letters) in "numerical" score data it screws up the sort. Only considering the numbers before the first comma. http://www.byond.com/games/Falacy/DBZHU2?tab=scores
Ah. Unfortunately the sort is going to be limited to whatever the database can handle, and it doesn't grok numbers with commas. Changing this would not be a simple matter. You'll have to switch to a non-comma form for scores.