Not necessarily. Some PKGs are pre‑“fixed” with a modified EBOOT.BIN that removes licence checks. Others require the official RAP. If you dumped the game from your own disc and converted it to PKG, you usually do not need a separate RAP because the console treats it as a disc backup. PKGs downloaded from the store (or that preserve NPDRM encryption) do require the matching RAP file.
: Digital files read quicker than physical Blu-ray discs. Tekken 6 Ps3 Download Pkg