@Kiwibird, there is NO verifiable proof AT ALL for Armstrong's claim.  And 1-year or even 3 or 5 years of outstanding performance is easily within reach of random luck.  There are easily more than 10000 fund managers on Earth.  If you ask all of them to gather in a room, and start flipping coins, there will be about 10 of them who happen to get 10 heads in a row, or about 1/1024.

THINK ABOUT THAT, 10 people out of 10240 people getting all heads in a row.  Are you going to call them smart money managers?  NO.  They got 10 heads just because of random luck.

So if EVER Armstrong had such performance for just 1 year, he just had good luck.  That's all.

Given Armstrong's verifiable record of flamboyant talking/lying, such as his office building, super-computer, etc, the weight of evidence is that he probably made this up, just like he made up the scooter man story.  That scooter guy left his scooter to Armstrong for him to test, for God's sake, and Armstrong couldn't figure out a damn thing about it?