Just to highlight another quote from the same page i already quoted :
By AMD's estimation, a 2.6GHz Phenom today, when making the jump to the new 45nm process node, should perform 10 to 20% better. So a 2.6GHz 45nm Phenom later this year would perform about the same as a 2.8GHz Phenom of the current generation. While most of the performance gain is mainly attributed to the enlarged L3 cache (still using the same exclusive caching policy), the gains sound much more than what Intel got when making their transition to 45nm.