The point @Xaklor’s (yes I’m tagging you) making, though, is that you tend not to really notice the difference.
Yes, 15 attack is a lot, but then you’re already on a pretty DPS-heavy character.
I think a better example would be to say the difference between using, say, Nile versus UBHP. Yeah, Nile gives you 4 spd and dex, but you don’t really notice those too much in just casual playing.
From my view, I do believe that there are specific cases where it is noticable, but those are generally solo situations; one that I find particularly noticable is Limon. Farming dexterity from her is, for me, a pretty decent indicator of how much dps I have.
If I can kill her without needing to repeat the jumpy phase, or can get her just at the stat of it, or end the fight right as the helpers die - all those bits of progression are indicators, to me, that my DPS has risen.
Now, that only occurs when I’m still maxing a character. Those stat changes, that gradual build up of dex, doesn’t really happen for maxed characters. If I weren’t keen on noticing the slight boost given to me in terms of speed from my Honey Circlet, I wouldn’t be using it; and even then, when racing against another class with probably just 2-3 less speed, that’s where I begin to notice that…there’s not that much of a difference.
tl;dr tiny stat changes from equips are near unnoticable, RotMG’s stat calculation system should probably bee looked into, why am I typing out 20 mile paragraphs.