If you want to play steam games or Nintendo games this isn’t the device for you. If you want to play Playdate games then this is your best bet. In other words, apples and oranges.
It still a video game playing device, no? We still compared a game gear vs a gameboy in the 90's or a DS vs a PSP in the 2000's.
It's like a contractor who needs a truck wondering why someone would buy a Mini. They are similar, but the market needs they solve are totally different.