aok:

for made hands, it's more like 90/10, in my db anyway.

~30K hands, in descending order of value:

Net Winners:
full house (1.31%)
three of a kind (3.53%)
flush (1.57%)
straight (2.70%)
four of a kind (0.09%)
straight flush(0.01%)

Total: 9.21% of total hands

Net Losers:
two pair (14%)
one pair (44%)
high card (32%)

80/20 would be about right for starting hands though...