Hmm well SSBB does support the SD card maybe if you have one in there you can save right to it? o_O I do know that that number is the amount it needs to save alone not including replays, pictures, and edited maps.
MaxwellGT2000 - "Does the amount of times you beat it count towards how hardcore you are?"
Wii Friend Code - 5882 9717 7391 0918 (PM me if you add me), PSN - MaxwellGT2000, XBL - BlkKniteCecil, MaxwellGT2000