Secondly, if you actually parsed through the article, you're considering book value of his un-exited investments to be $0.
Do you have any investments like this you've made? I might be interested in taking them off your hands for an _excellent_ price compared to their $0 value.
I re-read the article to make sure my second point also holds: the 10% (over three years, so really more like 3% if you are looking at IRR) is only calculated on actual current exits.
About half his portfolio is still indeterminate. Barring seriously weird circumstances, he will do very well overall on this crop of investments, especially considering that he started in 2006.
That said, keep on with your current strategy. Everyone has a place.
I'm reminded of old-time slashdot -- I banned jonkatz from showing up anywhere on my slashdot pages. It was bliss.