I don't know if this helps but I was also confused with regards to the difference between the 2014 Sick 454 Jeff Hall Reload ASA (SBSKJA-white bat with pink & gray lines) and the 2014 454 Jeff Hall Reload ASA (SB4JHA-white bat with red & blue lines).
Called Worth and technician told me the "Sick" reload is going to have a little more pop but smaller sweet spot than the original JH ASA Reload. Everything else is the same (end load, technology, etc). Not sure if the same goes for the "Legit" line of bats.
JJ