In terms of gameplay I think the Sheikah Slate functions were mirrored on the Wii-U pad (at least that was likely the original intent.
The Wii-U emulator was also a lot more developed when BotW released, so if you pirated it at launch the Wii-U version was the one to go with.
I’m totally open to being in a relationship with someone, but they would have to be one helluva person to make me want to give up being single!