Next you'll be claiming that Nvidia does a good job in this budget sector, when they are clearly far far worse. Just look at Anandtech's recent look at a G210, where the card couldn't even pass the test without dropping 1 out of 3 frames, not to mention having worse audio.
The fact remains that it is still by far the best HTPC card when it comes to price, power consumption, heat output, video quality, and audio quality.
Some might be drawn to the 5570 where you may get very very slightly better video quality for SD sources, but most people building HTPCs now days are concerned with HD video sources, so the lack here isn't a killer.
And even considering that, the video quality of SD feeds is virtually indistinguishable between my 5870 (which can enable everything easily) and the 5450. I'm one of the ones still viewing some SD sources as I am a horror film afficianado, and most of my library isn't going to be released in HD anytime soon.
And it's a complete non-issue.
Regards,
SB