The Ryzen based laptop is a bit newer and better, the screen is a bit better i expect, the 4070 is better, the CPU is not quite a strong as the intel but probably more energy efficient.
However specs like this dont tell the whole story, they dont just make one version of the 3080 and one 4070.
They make a range of different power limits, so you can have a really weak 3080 that has been tuned to use less power and create less heat ( these are MAX Q models ) and they make MAX P models that are the high performance tuned ones that have high power limits. They are usually in higher end gaming laptops that are expensive and have good cooling systems.
The problem is that info can be hard to find, companies seem to go out of their way to hide that info and you have to dig through their website looking into deeper specs or even contact them to ask or look at reviews etc.
Generally I would go for newer laptops and avoid MAX Q versions.
