i thought the supply was infinite? (no hard cap)
look here:
https://bitinfocharts.com/ppcoin/
number of blocks multiplied with blockreward mulitplied with 365 (days of the year) gives me out an annual dilution of ppc holdings of 500k in 1 year.
It amounts still to an inflation of 2,5% annually at the moment. Not bad when compared to other coins (4 times better than bitcoin right now) but uno can still beat that many times.
Holdings in ppc are certainly eroded less over time than holdings in btc or ltc, that is true. I do not think the annual 2,5% includes the erotion from pos interest though. The interest you get on holdings (1% or 2% a year?) has to be added to the inflation from mining.
Uno in any case has a lower inflation than ppc has even, which already has a more healthy amount of inflation compared to the rest of the coins.