You don't appear to have done a Forum Search before posting this ? If you had you will have seen dozens and dozens of posts about it as EVERY DirecTV customer was affected. The message tells you what to do, and there is no reason why the quality should be different as both HDMI and Component send HD signals,.
I have DirectTV and the past 2 months my HDMI connection has been blocked. The message I get is
"Your TV not support this program's content protection. Replacing the TV's HDMI cable with component cables will allow you to view the program.". I do have component cables and they work fine but the quality of the images is not the same.
Has this happened to anyone else? Any recommended fixes?