Update:

[Talking Poker]

I understand what you are saying, but I think you are not understanding the big picture.

If at the end of the year, you have grinded out 100 $5 winning sessions and 0 losing sessions, you've netted $500. If at the end of the year, your brother has logged 50 $50 winning sessions and 40 $40 losing sessions - guess what? He's netted $900. Sure, his variance may be higher along the way due to his style, but his more aggressive style is also making him more money in the long run, which is what it's all about.

In the short term (session to session), variance will be very high - In fact, this "pattern" you have picked up on is probably not a pattern at all. Poker is a long term game. In the long term, variance goes away and the best players end up with the most money.