I think around 2 million is almost a lock for Final Fantasy XIII, but more I see it practically impossible.
Final Fantasy VII --- 1st week 2.034.879 --- LTD 3.277.776
Final Fantasy VIII --- 1st week 2.504.044 --- LTD 3.501.588
Final Fantasy IX --- 1st week 1.954.421 --- LTD 2.707.301
Final Fantasy X --- 1st week 1.749.737 --- LTD 2.325.215
Final Fantasy X-2 --- 1st week 1.472.914 --- LTD 1.960.937
Final Fantasy XII --- 1st week 1.840.397 --- LTD 2.322.541
- Final Fantasy XIII --- 1st week 1.550.000 --- LTD 1.900.000
btw, very low estimations for Inazuma Eleven 2 (this estimation is a joke), Phantasy Star Portable 2, Gran Turismo and Sengoku Musou 3.
[NDS] Inazuma Eleven 2 (Level 5) FS 220K-310K / TF 170K-240K (Inazuma - FW 41K / LTD 386K)
[PSP] Phantasy Star Portable 2 (Sega) FS 190K-240K / TF 210K-400K (PSP - FW 329K / LTD 637K)
[PSP] Gran Turismo (SCE) FS 160K-220K / TF 250K-320K (GT5P - FW 108K / LTD 239K)
[WII] Sengoku Musou 3 (Koei) FS 80K-120K / TF 120K-170K (Sengoku Musou 2 - FW 301K / LTD 552K)