I got a Core 2 in early 2026. I noticed that, for the same level of effort, the displayed power seemed lower. I mounted my Favero Assioma RS2 dual-power pedals on my Zwift Rike. I did the new Core 2 spindown test.
See: https://forums.zwift.com/t/kickr-core-v2-vs-assioma
Now, for me, the difference between the Core 2 and the power pedals is acceptable. Learning is complex and subjective and it’s not easy to compare 