Technical Question: Video Resolution - DVB vs Digital Cable — Video Satellite Forum — DVD MP3 AVI MP4 players codecs conversion help

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Can anyone enlighten me or provide a source of information on the
actual video resolution (not theoretical maximum) one typically gets
with:

DVB (say Dish Network or Express VU)
Digital Cable (not HD, just regular)

Am I correct in assuming Digital Cable uses the same MPEG compression
that digital satellite uses, or do you get a higher quality picture
with digital cable than you do from DVB? (I have yet to see ANY
digital satellite broadcast compare with the old analog broadcasts)

Any leads appreciated.