There are physical limitations to what your CRT can display. Yes, those stations came in nice and clear, but they aren't being displayed in high definition resolution, as your set cannnot display it (it's not even the correct shape). Anyway, they are coming in clearer, but are downsampled to fit your smaller pixel display (480i). It only looks 'darn close' since you have been accustomed to the poor SDTV signal. Some of the cable sources are certainly less than desirable, and can often require a few box exchanges to get one w/ adequate PQ, even for SD broadcasts. OTOH, Sony Trinitrons are known for being stellar performers w/ SD. They typically get relegated to a den or second bedroom when the first real HD panel arrives
.
-Pedro
p.s. just think how thrilled you will be when you get an HDTV connected eventually(!)
I just hooked up cable today, and started using my DVR/HDTV enabled cable box.
Not having my HDTV yet moved in, I hooked up my Sony KV32FS12. Anyways, much to my surprise, I turned to the HDTV channels and they displayed on my set! What the heck? What am I seeing?
The picture is widescreen, and is MARKEDLY better than when I switch to the non-HD versions of the same channel. EVery one of them. I've seen enough HDTV to recognize when the picture is better than standard digital cable.
WHAT am I seeing? The TV can't be true HDTV (it is a 9 year old set), but it is pretty darn close. Is it because the TV is small enough to simulate HDTV? Is the Sony set just made that much different?
What a surprise! I am thrilled.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic