Yeah, that's the part that upsets me most is that they said they weren't going to give the real buffs because the content wasn't hard enough yet, then immediately buffed content, some of it to extreme levels. And with SS runestones now, there's no reason to hold back.
The ones they gave some characters were so bad that they literally changed nothing because they didn't affect any passives people actually use and they didn't buff any others enough to make them worth using. Meanwhile the CN server buffs are incredibly substantial. I seriously think Mayuri was the only one who really did well. And like the other anon mentioned, a lot of characters who have buffs on CN never got anything at all. I know AST Origami was supposed to get some. I think Mordred was probably supposed to get some, too, but I can't remember for sure. I forget who else is missing buffs.
At this rate I just expect them to forget to do it at any point while content gets harder over time.