Correct.
"The separation minima are determined specific to each Aircraft Pair. For example, at the moment, an A330 following a B777 (Heavy behind heavy) requires 4 miles in trail. With the new rules, that is reduced to 3nm. An A320 can now follow 4 miles behind a B777, instead of the current 5nm."
Level of safety unchanged, oh sure. So, if you expect a wake encounter under current rules and you can expect a wake encounter in the new rules, it is unchanged?