Its not true, did you forgot at Phenoms II? The best months with LN2 ever, it destroy Lynfields etc (more than +1GHz OC fun) and Phenoms II x6 were better than lynfield in price/performance ration. The multithread was the same as 4c/8T Intels CPU, OC was similar, IMC was similar. Only in Superpi or old benchamrks at one core were Phenoms II a bit worse than Intel.
x4 965 BE performance is average as i5-750
x6 1090T BE is as i7-950 or i7-870
PS:clock to clock is something as apples and pears, because you cant compare different architectures (only if the basic is the same, example family 15h or 10h or SB vs IB generation etc)