I'd suggest you play more, listen to reviewers less.
Spear and mace are very different. They do different damage types which can be significant depending on enemies' damage reduction types. Spear has reach and can attack from behind another character for example which can be pretty useful. Bonus accuracy and DR bypass are very different too, accuracy means little vs. an opponent with high DR while the spear would be better vs. an opponent with lower DR but higher deflection.
As for loot, equipment has enchantments similar to DnD. So for example you had your generic +1/2/3 bonuses or life drain or + 1d6 of a certain type of damage or some kind of spell effect on strike, etc. PoE has pretty much all that stuff. For example, instead of +X enchantments it has weapon quality which increases accuracy and damage. You can also enchant stuff and make your own magic weapons/armor as well as just find or buy them.