I just finished Resistance 3 today, I enjoyed it more than both of my past Gears of War experiences, I'd also give it a 9/10 and I say all this being a pretty big Gears fan. The reviews were also written by different people, their ideas of what a 9/10 means may be different.
Outside of a Playstation dedicated review site, I doubt you'll find a Western site that is biased for the PS3.
Bet with Conegamer and AussieGecko that the PS3 will have more exclusives in 2011 than the Wii or 360... or something.