QUESTION
Is the Sony A7C II better than the A7 IV?
For most hybrid shooters, the Sony A7 IV is still the better all-around camera. The Sony A7C II is better if you specifically want the smallest full-frame body and newer AI-assisted autofocus in a travel-friendly setup.
Verdict: choose the A7 IV for paid work, events, weddings, video accessories, better handling, and redundancy. Choose the A7C II for travel, street, family, everyday carry, and anyone who values compact size over pro-style controls.
The image quality is very similar because both use a 33MP full-frame sensor class and have strong stills/video specs. The real difference is body design: the A7C II is smaller and newer; the A7 IV is more practical and reliable as a main work camera.