That means that transactions which paid at least BTC0.0002 in fee are getting confirmed without much delay (provided that their size is more or less equal to the median transaction size). The delay is mostly happening to those who paid a lower tx fee.
Wrong. 0.0002 BTC is equal to 20000 satoshis. For a transaction of the media size (226 bytes) that is still under the recommended, as it is 88.49 bytes/satoshis. That said, due to the incompetence of most users they are likely creating unnecessarily large transactions which require even bigger fees than that. A fixed fee does not guarantee anything. Including a fee of 0.0004 may be inadequate. It has to be measured in satoshis/byte.
ONLY FOR PROS.NOT FOR INCOMPETENT OR NEW USERS.