NS - 155(.30) + 148(.30) + 77(.20) + 157(.10) + 191(.10) = 141.1
PS4 - 127(.30) + 262(.30) + 266(.20) + 257(.10) + 148(.10) = 157.2
XBO - 29(.30) + 216(.30) + 52(.20) + 156(.10) + 212(.10) = 120.7
SNES - 18(.30) + 79(.30) + 0(.20) + 0(.10) + 97(.10) = 38.8
3DS - 0(.30) + 232(.30) + 0(.20) + 74(.10) + 81(.10) = 85.1
I just adjusted the NS and XBO Gamestop numbers in the simple weighted algorithm I made. Not sure what the PS4(April) is. But this proportion looks a lot better. Swith close to PS4 sales, but PS4 ahead. According to these numbers though if there still are not 3DS rankings in the top 200 at Gamestop, it looks like 3DS numbers might finally be dropping sales this year.