The only way I noticed that my antenna picture was just slightly better than my Satellite picture was after watching an NFL game on Bell in HD and then watching another game after that on WIVB--channel 4. I did notice that the picture was a bit sharper, but not enough that your "average joe" would be able to tell.

I do agree with you: watching SD content on a large HD screen does look bad: fast moving pictures like in football or an even better example: when the camera pans tha audience on The Price is Right, you notice a lot of tiling--for lack of a better word.

Now that I watch more HD than SD, I don't notice this as much: something I'm sure the industry has improved on over the past few years.

That's just my opinion.