[akak]

You're passing the wrong information. They CAN have an advantage over large stacks. If the large stacks are playing too LAGgy, you will have an inherent advantage over them.

The statement: small stacks have an advantage over large stacks is false. No stack size has a theoretical advantage over another stack size due to the table stakes rule.

If you are less skilled post flop than your opponents then shortstacking is the best way for you to make money.

If by best way to make money, you mean make the most money, you are wrong again. The best shortstacker will have a smaller winrate than the best full stacker. Shortstackers cannot push their edges as hard, therefore their expectation is not as large.

I KNOW miller wouldn't have said these things, so you are passing on his information incorrectly. This post may seem a little harsh but you should be more careful when you are passing on someone else's information.