Yeah it's a given that only 7950x and 7900x will compete in mt performance. The rest of the lineup will be competing with alderlake still.
Exactly, it means same wattage 25% more performance. But since tdp goes up, efficiency goes down. Most likely every cpu will be less efficient than its predecessors out of the box.
Of course for me its irrelevant, since I only care about efficiency at same wattage (thats why I consider alderlake insanely efficient), but people here seem to care only about out of the box, in which case - bad news, zen 4 will be a power hog compared to zen 3