'Evidence' is not the right word to use here.
It's more of an indication.
Remember

is all about the brand. And the PB / MBP have always been promoted as the 'world best laptop'. It is impossible for

to uphold that motto while the current MPB sports the Merom processor at the same time that competitors have Penryn based models sitting on the shop floor to ready to take home.
I think

are hurting on this one. Delays and complications with fitting the processor in (remember the Santa Rosa platform in the MBP/MB is a modified one) have contributed to the delay of these machines. But I also think

have been pro-active and have utilised the time to beef up some of the cosmetics / specs on the impending MBP.
I think they'll definitely be here by March the 17th and I think we will all be pleasantly surprised at their value/feature set.
This is what

do best.