Current MacBook Pro 14"/16" use the M1 Pro/M1 Max instead of the M1 that the Air and 13" MacBook Pro have, so definitely a different (and later iteration) CPU: https://www.apple.com/macbook-pro/
No, that's incorrect. Here's an image that illustrates the physical differences between the M1, M1 Pro, and M1 Max, including their vastly different die sizes:
https://images.anandtech.com/doci/17019/Die-Sizes.jpg
Let's call it an oversimplification, the SoCs are definitely different. OP sounded like they were thinking about MacBook Air and the 13" MacBook Pro, and not taking the newer models into account.