There are 3 (I think) font types in PCL. Raster images, TrueType fonts (in later versions), and the HPGL font appear.
PDF and PostScript are types 1, 2 (CFF), 3 and 42 (TrueType, but not the same as PCL), and CIDFonts based on any of the previous types.
The only type of font that has two is TrueType, so to save text, any font that was not TrueType would be converted to TrueType. This is not an easy task. Therefore, Ghostscript simply displays text that is guaranteed to work.
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