The only difference is that with the add on you've bought you can get a 200 gamerpoint score for unlocked achievements. Where as if you had bought Anniversary as a standalone game you get the full 1000gs. The achievements for the full retail version are crap anyway and some of the Time trial ones are extremely hard.|
Although if achievements aren't your bag your missing out on nothing.
Edited by Trendyninja at 10:51:16 08-02-2012
#8403570, By Trendyninja *Official* XBLA thread
Trendyninja 191 posts
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