If you are talking about software API's (Application Program Interface) that they release in their SDK's (Software Development Kit) then I can honestly say I am not sure of the strengths or weaknesses of either so I will have to take your word about the developer interviews. But I was speaking more to the actual low-level coding of the API's themselves. So in that regard what you have said is in complete agreement with what I have said.
Basically, because the API libraries are so much harder to create on the PS3 than they are on the 360 or the Wii it would stand to reason that their functionality would suffer as a result, at least in the short term for the early life of the console. Ultimately it is far far easier to get high end performance from a more conventional setup than an unconventional one. But no setup could be conventional unless someone started it, in which case it would clearly be unconventionally. In that regard you could claim that Sony is bearing the pain of expanding on the workable architectures to a new area, but this claim would ultimately be proven true only if the architecture and its accompanying libraries are deemed worthy and actually carried forward into future projects. And if you are paying attention to the PC world at the moment it seems likely that they could (by no means even close to a guarantee).
So yeah...in conclusion I believe we agree with each other completely, I think perhaps you may be just adding a bit of spin, hmmmm? 
PS - I expanded the acronyms for the laymen reading this...








