I can pick up any Zelda game in the series and know that I'm going to have a good time.
TES, on the other hand, tries to change up their formula every time they do something. Every game they make is only similar to the previous games in that it's an open world. That's it. Character skills, abilities, levelling, puzzles, NPC behavior, Boss Battles, the magick system, everything TES does gets changed every time. When you buy any given TES game in the series, you have no idea what you are going to get.
I don't like that. I enjoy TES, but their systems are always in flux which means they always have the glitches and bugs and problems that are associated with a first effort. TES is not polished. It's shiny, but it's not polished. Zelda is.
That's why Zelda won and I agree that it deserves to. I voted for Zelda and I haven't even played it.