I'm buying both since I love both series.
CoD MW3 will destory BF3 in sales.
BF3 will destory MW3 in critical acclaim and quality.
I love EA and dislike Activision, but the amount of shit they've been throwing at Activision is just uncalled for. I'm rather suprised Activision still keeps composure and doesnt retaliate as much as EA. Hell Robert Bowling continously praised BF3 and said he'll buy it rightaway. This whole BF3 vs MW3 is stupid ass.