It might be usefull

Summary :
Non crit Non soft = (atk-def)*boost
Crit Non soft = (atk-def)*crit*boost
Non crit Soft = ((atk*soft)-def)*boost
Crit soft = ((atk*soft)-def)*crit*coost
With those formulas, you can understand that soft damage are litteraly broken.
boost = fibi/hat/jennifer's hat/...
"How important is the jewelry?"
Imagine you get 10 000 damage from a non-critical hit. He has 200% critical damage, you have 0% critical damage reduction. He will hit you 30 000 in critical hit. If you have a jewel with 50% critical reduction (45% is maximum, but let's imagine), he will have 150% critical damage. So, you will get 25 000 damage. It is really important to have decent jewels.
"How important are the boots and gloves?"
Stats are important (+100 def/dodge/150...), it really increase your survability (100 def is something like 15% of your overall defense at the levels 88~95. You won't be 15% tankier, because soft damage are just broken, but you will be tankier.
Resistance are, imo, the most important stat in defense. If you have 5000 armor with 75% resistance, you will get one shot. If you have 0 armor with 200% resistance, you won't. (Except against Scoot fully buffed)
And what is important for your armor and weapon shell options?
Weapon :
(don't have the exact english name)
S - Damage
S - Damage pvp
are the two main damage option. S - Break def is interisting, but when you have 3000 attack, the opposent got less than 1500. So 2% break def = 1% damage with those values.
If you want to play with elementary damage, prefere a "S - Reduce Resistance" with a "A - Reduce resistance to water/fire/whatever".
Also, "SL" are really important (get at least 100 attack with 60 hp.
At least.
Armor :
If you don't have great resistance, just go for a S - Increase your resistance with nice dodges values. Defense pvp is also a must have (just pick a S res random pvp shell, and you got what I'm telling you)