Quote:
its all subjective.
Well, yes and no.
For one, a tier set can look awesome, but people aren't going to enjoy it if they don't feel connected to it by class. I adored the Judgement set for Pallies back in Vanilla, but I'd hate it on my Death Knight or Mage--it just doesn't make sense. I think the Mage set for this tier looks cool, but I just don't connect to it at all. If it was a Warlock set, I think it would be great. I associate things like the Robes of Tirisfal with Mages (and that was probably my favorite set.
Furthermore, there are objective facts about what appeals to humans as a group. Complimentary colors, for instance. People also, generally, don't like muddled colors. And clean, clear lines are generally preferred to jagged ones (which is why seam placement on real clothes are so important).
Finally, people are going to like sets less the more "cluttered" they get. It shouldn't stress your eyes to look at your tier gear, which is one of the problems I have with most Hunter sets (and particularly this one).
And one last thing, though this doesn't really have a RL example to it--the focal point of WoW gear is the helm or the shoulders, but should never be both. That's just going too far, imo. If both are large and extremely detailed, then the whole set gets dragged down. But they can do really well by making one of the two the "impressive" part of the set--your eye shouldn't be drawn all over the place.
Beyond that, though, yes--the sets are subjective. The last tier of Mage gear doesn't violate any of these and I still hate it, but I'm sure others disagree. But some sets just seem to ignore these basic rules of thumb, and it makes me wonder how anyone could like them.