NPD March 2010 Final Fantasy XIII or Pokemon HeartGold/SoulSilver?

[TWRoO]

Hmm, well pokemon is a remake, but it could still be huge.... it's a tough call

I think FFXIII could do anywhere between 600k-1000k first week (combined PS360)

Actually this is for NPD isn't it, ie not just 1st week sales.... in that case, if the release dates in the OP turn out correct, Pokemon should win.