Because no one cares about the US American seasons for anime outside of the USA. It follows the 'seasons' in Japan, where it is counted as one continuous series. Just add up the numbers and you should find the equivalent episodes:
'Season' One: 01 - 48
'Season' Two: 49 - 96
'Season' Three: 97+
I don't really care about that either, but XBMC does ;)