PS3 only has one game in JAN NPD TOP 20. Sign of Trouble ahead?

[RayRay102]

http://www.gamasutra.com/php-bin/news_index.php?story=21906

It is depressing seeing the chart dominated by Nintendo. X360 has at least 5 games up in the TOP 20.

PS3, on the other hand, only has COD WAW in the TOP 20. Where is LBP, Resistance 2? I was expecting at least LBP to make it in the TOP 20 because of recent heavy advertising for the game. What happened?

I know the PS3 installed base is the smallest of all the consoles, but between PS3, PS2, and PSP, there were only 2 games from the PS family in the chart. Is this a sign of trouble ahead for Sony?

Edit: I mean DEC NPD TOP 20 and not Jan.