Should arm based surface devices use nvidia processors instead?

This might sound wired. But when I saw the Nintendo switch using a custom tegra based processor that can run mid resource intensive games while giving about 5 hours of battery life out of just a 16 whr battery, it surprised me. I kept searching nvidia’s website and found out that the tegra x1 on shield to is very powerful yet efficient. Although 10 watts may seem a lot, but it’s 20nm compared to today’s 5nm. Nvidia markets them as mobile processors, and scaling it down to 5nm means a lot of efficiency for the same performance, which should even give some headroom for to increase the power by a little margin to get some more performance. I know that the processor has older cpu and gpu but it can be simply made up by using today’s new RTX and arm counterparts.