the processor it uses, the Snapdragon 8 Gen 1, is pretty notorious for poor efficiency. I have a phone with it and it heats up a lot (battery reports 45C) from more demanding tasks (such as gps), battery life isn’t the best either.
That said, my battery life has not been as bad as yours… 2:30hrs seems quite poor.
Webcam on Intel may not work due to drivers that Intel hasn’t written/upstreamed for IPU6 cameras. Looks like it’s in the work now… for certain sensors. Intel has taken literal years to get anything out. the Core Ultra 200 series is out but drivers for these webcams which have in use since Tiger lake (almost half a decade ago!!) still don’t work.
“Greg KH Recommends Avoiding Alder Lake Laptops” https://www.phoronix.com/news/Greg-KH-No-ADL-Webcam-Laptop
Nor the integrated cameras or the IR camera worked out of the box on my laptop. Some hacks could be done to make it work but it breaks after the system is updated. It never worked when I needed it and image quality was limited to 720p and worse. From what I understand, current methods to get the camera to work use minimal software processing to process the images, instead of the dedicated silicon.
Not all Intel laptops use IPU6. I know some HPs do not.
Haven’t had many issues with the Intel AX211. Very rarely, the wifi settings will disappear after my laptop suspends and a reboot is needed.
The battery capacity also doesn’t seem very big, I’m not sure how efficient the AMD CPU is but I’d be worried that Intel would deliver less battery life.
GPU performance might also be better on AMD? (haven’t checked).