As postoficebuddy said, it's not a very bold prediction
. Unless MS have something special coming up in the same week (which I don't think they do), then with PS3 Japan sales (which will clearly increase significantly between Move and the white model launch) PS3 should easily surpass the 360.
Currently Playing: Shin Megami Tensei: Devil Survivor Overclocked, Professor Layton and the Curious Village
Anticipating: Xenoblade, The Last Story, Mario Kart 7, Rayman Origins, Zelda SS, Crush3D, Tales of the Abyss 3DS, MGS:Snake Eater 3DS, RE:Revelations, Time Travellers, Professor Layton vs. Ace Attorney, Luigi's Mansion 2, MH TriG, DQ Monsters, Heroes of Ruin