Kage has definitely changed since 3.0. How many free pull super kages had you heard of before 3.0? For me zero. After the update a multitude of people have reported getting super kage ninjas on free pulls. I haven't put a single scroll into Kage since getting Ay months ago, yet free pulled sasuke today. To get both pre 3.0, you would have planned on sinking another 980 scrolls.

What we have now is likely the early stage china version where treasures are more RNG based.

By the way pulling for a super pre 3.0, every single 60 pull was a rare. This proliferation of it's always been this random is BS. Perhaps there was some deviation from '60'. Occasionally there'd be someone complaining about a 70 roll, but it's never been this random. 60 was the magic #. Now you have people dumping up to 150 to get one rare. That's not normal and if it is normal, Oasis needs to be transparent about how the treasure has changed.

Good luck with your pulls, do record and report back.