Those sims are with Goldminer’s Helm which gives 7 axe skill (same amt as Edgemasters gives to axe/sword/dagger).
Literally the difference is Goldminer’s/Gauntlets of Annihilation has 17 more strength at the expense of Lionheart/Edgemasters having 0.75 more crit and 1 more hit.
That’s the difference (and yes Goldminer’s/Gauntlets of Annihilation has 21 more stamina).
So yeah, the DPS difference shouldn’t be that substantial since the Goldminer’s option has a lot more strength.