Wet PKGs are self-contained. Once you have the file, you own the functional game regardless of whether the PlayStation Store or the CMOS battery (the "CBOMB" issue) is functioning.
However, if you want to play the game as intended —with smooth combat, synchronization, and minimal technical frustration— wet ps3 pkg better
You can keep your arid, crumbly, static-free PKGs. They belong in a museum display case behind glass. Wet PKGs are self-contained