I TOTALLY agree with the article, but I don't think the PSN is failing...
When people compare the 2 online systems, they make a list of features... 
... it always results in a biased way to compare things...
XBL is part of the 360 from the beginning, how it plays, how it communicates (everybody has a mic...), how the machine reacts by telling you who you could play with, achievements, spotlights on games...how the NXE architectrure can quickly evolve to propose new content with new way to present it... well everyting.
PSN is more an add-on to the PS3. A patchwork of copied features they are trying to improve with the resources they have. Sure it as (basically) the same features and also different stuffs..; but it just feel disjointed to the gaming experience to me.
I said it already, it is the result of the positioning of the two companies :
MS is about software while Sony is about technologies... it is as simple as that... 
Sony won the format war and Microsoft is winning the online community war...?
Evan Wells (Uncharted 2): I think the differences that you see between any two games has much more to do with the developer than whether it’s on the Xbox or PS3.
