Sony (NYSE: SNE) said that sales of its troubled PS3 picked up over the holidays, selling 1.3 million units in North America. According to The Associated Press, this increased "the strength of the company's Blu-ray video format because the console also works as a Blu-ray player."

Perhaps that is part of the reason that the PS3 has not done better than its rivals, the Nintendo Wii and Microsoft (NASDAQ: MSFT)'s Xbox 360. Is the PS3 a Trojan Horse for Sony's HD video strategy or is it a game platform?

Part of the problem in selling the PS3 has been what the consumer had to pay to play. Until the recent price cuts, it was more expensive than the Xbox 360 and twice as costly as the Wii. This almost certainly undermined unit sales. Without a Blu-ray player as part of the hardware, the game console could probably have had a cost base which was much lower.

Sony may have hurt the ongoing marketing of its gaming product by "mixing" it with the company's plans to dominate high-definition content playback. The PlayStation was once the consumer electronics company's flagship and was highly profitable. Now the game unit loses money.

Sometimes two goals from one company put into a single product just creates a mess.

Douglas A. McIntyre is an editor at 247wallst.com.