there is no chance you would get back to the Intel system and plug it in every 2 hours.
don’t be irrealistic. most laptops in the Macbook price range will have 8 hours of usage in low consumption mode or around 6 or 5 if you need more power.
and at that price point they come with at least 32 GB of RAM which can be upgraded, swappable SSDs with more capacity than the macbook’s, far better keyboard and more ports.
the Macbooks do have some extra performance per battery usage? yeah I guess. But after 2 years that the battery life is gone, you’ll probably be buying the newer model or wishing that you bought a laptop with a replaceable battery.