Are we sure this is actually 4 cores and not a reporting error? AFAICT with some surface Googling Apple doesn't sell the M2 with cores disabled does it? Also 4 cores 8 threads is suspicious given that AFAIU the M2 doesn't have SMT. So you'd have 4 big and 4 little cores for 8 total. (at which point I think that part is fair. This is a chip to chip, not an uarch to uarch comparison)