Meh, I think all three systems have had poor Springs. With Summer just arriving, the Wii and 360 are going to/have already start/started to receive a little bit more support, but as far as I know, the PS3 is completely unremarkable, which is what makes it so remarkable.
I think both are going alright, but both droughts are partially because so many publishers and devs wanted to wait and see the Sony vs. Microsoft initial results, and the few remaining had finally completed a game, or were making something separate from the rest of the gaming world for the Wii.
In short, I'm blaiming Sony for this drought.