Suppose someone was to get a tablet for trading. AND assuming the tablet has the same resolution as the laptop. Since tablets are held much closer to the face than a laptop. Has there ever been a study that said looking at a tablet of screen size X is equivalent to a laptop of screen size Y?
Look into pixels per inch. The higher the resolution smaller the screen. Tablets are usually max 10 inches then you can't see rhe pixels. 1080p on a tablet is fine. 1440p retina display mumbo jumbo is luxury.
It is better to look at a tablet, better resolution and you can hold it closer to your eyes. Same for watching TV. Depending on how far they are from your eyes with their respective sizes, a laptop can be much bigger than your big ass big screen TV, if it is far enough from you.
I personally think the surface go 2 is pretty underrated. Great resolution, very light and runs full windows.