No TBN data?
The 5w30 has gotten progressively lighter over the past year and now is lighter than their regular 5w30 with a HTHS 3.0cP vs 3.1cP but it's slightly lower VI of 169 vs 172 probabily compensates for that.
The 5W-20 has gotten heavier with it's HTHS of 2.75cP and 10 point drop in it's VI to 161. It's likely a more shear stable oil for extended drains.