EEDAR have released their findings for games released on each console between January and July 2009 with some interesting results.

XBOX 360 

2008 - 66

2009 - 67

PS3 

2008 - 68

2009 - 68

Wii

2008 - 60

2009 - 66

The big mover is obviously Wii with a 10% jump in overall quality this year matching the XBOX 360's 2008 library. The PS3 is still the leader sitting on 68 but the 360 is only one percentage point below. With the holiday season fast approaching, it'll be interesting to see how these values change, if at all.

source: http://www.industrygamers.com/news/the-divnich-debrief-wii-quality-sees-significant-improvement-in-2009/

So the PS3 is the winner! How recent is the data, as in does it include the 90% + Batman? The big games of the holiday on PS3 and 360 are likely to outscore the big games on the Wii. MW 2, AC II, Halo ODST and Uncharted 2 are basically all going to be 90+. I doubt the same thing for Wii Fit +, maybe NSMB Wii

Wow, that's a big jump for the Wii. I wonder if it's due to a drop in the number of shovelware titles, an increase in the number of quality titles, or both.

Considering the Wii has so much shovelware, I'm surprised it's good games are enough to counter balance that meta-score average. Does meta-critic cover ALL the crap though? Will a game like Paws and Claws: Pet Vet even get enough reviews to garner a meta-acore? Anyways, good on Wii for the jump.

I wonder what the total number of games per console is, for this average? The higher the number, the harder it is for single game scores to affect it; the lower, the easier.

I don't know that it will make any difference, for any of these scores, but it is, IMO, good information to help analyze the values given.

It's interesting to note that no other console has ever been able to jump this much mid cycle. Perhaps it's just that devs finally 'get' the Wii as the article states..

But sales wise will be pretty much for wii fit plus and new super mario bros wii,  metroid prime triloy is getting a bucketfull of 90+ mind you, based on 19 reviews metroid prime trilogy has good overall score.

I wish people - especially those who work with numbers and statistics - stopped producing averages of data without indicating 1) the size of the sample and 2) its standard deviation.
Comparing averages without the deviation really makes little sense.

Its all dependant on the number of titles released for each console.

It would be better to see how many games was released, how many were below avarage score and how many above.