Not a truly direct comparison, as the Critters films were New Line titles, whereas the OG titles [forgive the abbreviation] have been in-house WB titles from the beginning. None of us knows where the film elements for those low-budget Critters titles are, never mind their current condition.
I doubt that these will be "substandard"; they simply fall into the category of another WB title released in the Shout Select series: Wildcats. Films that were hits in their day, but have somewhat faded into obscurity. There are no indications that the Oh, God! collection is in desperate need of...