the bulldozer die is supposedly 294mm2 and sandy is 216mm2 so about 40-45% die increase for twice the number of "cores" doesn't sound all that bad. anyway there may be a smaller 4 "core" BD die in the pipes. (has anyone heared anything about this.)
Both top products use 8 threads, they just go about getting there differently. one saves on die space and brute-forces everything with 4 big cores. the other uses 8 less robust cores that share resources. it remains to be seen which is better, and at what.
why all the hate. intel/amd are both just companies servicing you people with a product.
don't get too emotianlly invested... they'll never love you back.