Well i don't understand the nerf of CP+Stats in that case.
CPs were nerfed because people felt they did arrive too early in teamgames, where it was often possible to get them as soon as they unlocked at 9 CPs. But increasing the CPs alone (up to 12CPs which was considered the maximum before they'd lose their timing window in teamgames) wouldn't have done anything for 1v1 and 2v2 where CP timing wasn't an issue, so they got some minor performance nerfs as well. Which in my opinion people are completely blowing out of the water. Heavies are still excellent, they just are not one unit armies anymore. They are still a very good and reliable way to round off a late game army.
The problem is, for the price of a Tiger, you can have 2 Stug 3 which are better AT, and by far.
That's quite irrelevant, the Tiger's AT performance wasn't changed. It's still one of the best AT vehicles in the game with veterancy, with DPM only second to the Tiger II iirc. The new turret traverse made it even better (scatter nerf was mostly negligible in regards to AT since it already has incredibly high accuracy). A (vetted) Tiger is significantly better at fighting heavy vehicles.
A properly supported Tiger is still a very good unit that brings both great AI and AT to the table and on top of that it has a lot more staying power than medium vehicles.