Yes, but it's the same time period of Dell's growth so it's most relevant. His investment return would also be far more surprising over most other 10 year perio

Yes, but it's the same time period of Dell's growth so it's most relevant. His investment return would also be far more surprising over most other 10 year periods. As it is... he just matched the broad market so risk (and effort) adjusted it's actually not good at all.