IMO his matchup chart is still going to look pretty good, considering that the characters that gave him trouble (BA, Atrocitus, Catwoman) mostly received nerfs as well, with Poison Ivy being an exception. He used to 7-3 a lot of chars - those 7-3 MUs have probably become 6-4 or 5-5, rending most of his matchup chart between 4-6 to 6-4, which is perfect.
He also goes even or wins against a number of the good characters who remained untouched in the patch, and will become more prominent in the meta. For example, he used to body Harley and Darkseid, and probably still wins post patch - both probably go up on the tier list.