People really need to separate the ENT set from the TNG sets - aside from the masterful bonus features, the picture quality is a completely different beast since it didn't go through the remastering process that TNG has received. Reviewing one against the other isn't really applicable, sadly.
But the comparisons are unavoidable I'm afraid. Professional reviewers will most certainly make them. As I've already stated, for me, and I suspect many others, it's the end product and how it appears on screen that really matters.
I don't ask this in a nasty or haughty way, but how do you suggest the discs are reviewed? Should we give 5 star marks for PQ, and post a small disclaimer stating inferior processes were employed in production - essentially, stating they're brilliant within the context of the inferior process?