mignolet is still the better shot stopper outright, but karius is more solid. i would like to see a better goalkeeper than karius for klopp and this exciting liverpool team, but karius isn't too bad, not like mignolet was.
i think karius is worth about 87 def, 89 res, 85 gks, since he's moved to liverpool. also mentality and teamwork should be slightly higher, about 3 points boosted in each. he's been decent enough, but not as good as the reputation he carried from mainz.
If you don't put effort into your post, i won't put effort in my response.