It is also possible that PPC will always have lower inflation than bitcoin after initially dropping below it if you take transaction fees (which are destroyed in PPC) into account when calculating inflation.
Oh, very good point, I forgot about that.
I think PPC money supply is very hard to predict. But I've tried to conclude the mechanics in another post:
http://www.ppcointalk.org/index.php?topic=187.0I'd like to hear your thoughts about it as it rises a couple of fundamental questions.