http://www.onlineconversion.com/roma...s_advanced.htm 
The Roman Numerals look more interesting that writing regular numbers.
XLVIII looks more intriguing than 48.
I get the tradition part of it, and am not asking for a change, but I think if they do change it, it should just switch to the year, i.e. SuperBowl 2012. Wait, that sounds like a video game...