This stood out to me, but it usually does when these charts roll around-- there's always a number of solid digital-only games that slip by the charts completely, while the predictable names stay cemented in place and the popular flavor of the month seems to swallow all of the "indie" attention (Rapture here being the only one of the four (edit: I forgot Journey, guess I should count it even though I think the free cross-buy probably inflated its downloads) featured PSN titles, and that's disregarding several other notable ones throughout the month).
I own nearly every game on those lists, but I also buy most any well-made indie title that I think I'd be interested in; that's what draws my eye to these charts every month, and I hope to see one or two of those awesome experiences I had reflecting back at me.
I feel for the devs who pour their hearts into their game and find it overlooked for any number of obvious reasons, but I'd hope not making it on the charts doesn't equate to bankruptcy and indelible failure-- we rarely see the hard sales figures or the budgets of the devs to make accurate assumptions, and I don't know if I'd say digital titles are quite as front loaded as retail (especially with what a good sale can do).
...I feel like I've started to ramble. Time for bed, I think, before I wander into another thread