I'm not excited about the future patch at all. Just one dungeon?

[Shurrikhan]

Neat, its still subjective. But if you think its better, you can say so.
Kay.

His statements were that WoW has...

• More of an open world. Objectively true. Later zones, especially, are larger and more detail-dense while still having loading screens only between continents rather than zones. Anything that can be reached by foot or mount can be reached without a loading screen.
• A vast universe. This depends on one's benchmark. Relatively speaking, this would have favored XIV significantly until ShB. Now the two are close enough in total quantifiable depth (number of players greatly interested in the game's cosmology and how long it takes to know all of it) that it doesn't seem a strong point.
• Less time spent idle in cities. Objectively true, if only due to accessible and useful midcore content and far more time played required before even hitting a soft cap on 'done everything til next patch', rather than the quality of said content (which would be only subjectively true if so). Not a huge difference, however.
• More characters. Objectively true, even if not necessarily a big deal given how little either game does to detail any but a small central cast (and WoW doesn't even do that particularly well, often depending on out-of-game lore instead even for active characters and their motivations).
• More lore. Objectively true. Though also as one would expect from a game with almost a decade's head start.
• Better lore. Subjectively possible. Though we could detail out or sub-divide criteria enough that we could have an objective winner in each category, the weighting of each and therefore the overall quality will remain subjective.

Of those, only one is subjective. That's not to say I like WoW, on the whole, more than XIV, but let's not dismiss anything and everything as "subjective" when they are, themselves, quantifiable or a vast majority of players consider X in one game better than in the other (an objective measure of subjective opinions that can at least tell you which, on the whole, performs better in regards to X).

Edit: I wouldn't even bother pointing this out if the term wasn't so often used as dismissive deflection to shut down conversations before they can get to the more objective aspects of designs, often preventing discussion into the XIV ways could improve itself.