Yeah, I think Blizzard kind of made this confusing for everybody.

What they included in the patch was disabling Nagle, or "TCPNoDelay". However, the lion's share of the improvement that people were seeing from these two changes was actually the first change, namely the change to the ack behavior.

It's worth giving it a try, especially if you are > 100 currently. Everyone I know that has applied it has noticed a significant reduction (mine went from 180ish to 80-90).