I would've voted BotW here no matter what, though a part of me is also feeling joy doing it to beat the Witcher 3 (pushing out Bloodborne is unforgivable). As a long time MGS fan MGSV was just trash to me, though probably the masturbating dream of some of the Just Cause open world junkies here about "muh gameplay" (half of which link videos that are just archetypical open world genre skits) in a terrible unfinished story and a pointlessly big and empty open world, along with pointless additions of the worst managerial features from Peace Walker. Ground Zeroes was a much better experience and would've loved to see the game going far more in that direction.
BotW is also overhyped, having so many fundamental issues (many of which are mentioned here. Breakable weapons just feels shitty and leads to pointless menuing. Shrines are just a fucking chore and Divine Beasts temples aren't a good replacement for dungeons. Disappointing bosses, etc, including also general open world design problems) , basically crippling it so that it wouldn't be able to earn a top 3 Zelda spot, or maybe not even a top 5 Zelda spot depending. That said there's far less wrong with BotW than there's with MGSV and more so there's far better heights with Zelda as well, far more positives.
Also really sad that Bloodborne fell out. At least that game only had a problem with accessibility in terms of weapon builds and problems with Arcane and Hunter Tools. And on the performance side, frame pacing and CA (though it never bothered me).