There's a common fallacy I've seen when Blu-rays are reviewed, and that's "it's better than DVD." So-and-so has heavy DNR, edge enhancement, and frozen or splotchy grain, but hey, it's an upgrade over the DVD, so buy it!
The original Blu-ray for Gladiator was "better than the DVD", but after a consumer frenzy, there was a remaster which clearly showed the original's shortcomings:
Compared the TNG season 2 DVD, the Blu-ray looks great. In fact, very authentic to the original episodes. While CBS-D improved the lighting on the Enterprise to make it look realistic, HTV replicated the same blown-out lighting from 1988.