- PDF can handle CJK and other large font sets without the hackish and painful workarounds required in PostSCript, which was designed assuming that an 8 bit character index was all you needed.
- PDF can handle alpha channel color. The PostScript work-around for the lack of alpha-channel support is to expand all the relevant areas into bitmaps with pre-merged colors rather than carrying forward overlapping vector-based elements with transparency. This works so poorly that I hesitate to even call it a work-around.