Jim Rogers - Still a bull on commodities

Resource Investor - Base Metals - More Quantum Leaps in Commodities?
Did he say I will make more money on agriculture than mining? Or something like that. Rogers is an investment guru, who has touted commodities for the last 10 (?) years as the place to make money.

He has not made me any since I started following some of his "stuff" a year ago. Maybe I'm to late into the boat?