More important than the format in which to export, is the design of the game.
A mobile game is designed to be played on a small screen, usually with one hand and using the fingers, that type of design usually looks bad on a PC with a keyboard and mouse.
A game designed for a gamepad or keyboard and mouse is often played very poorly on a mobile device.
If your game can be played in different formats, for example a properly adapted VN, then there is no point in limiting the format in which you export it, the more formats you have, the more people you will reach.
If your question is which device I prefer to play on, it also depends on the type of game, however personally I prefer to play on a PC.
PS: I also don't know what the .aab format is