Arm plate and bracers are pritty much the same thing.
I would say they were different if you weren't wearing protective gloves as bracers tend to protect your wrists too.
Personially, I would either ger rid fo arm plate or bracers, and put something for padding for underneath the armor..
For instance..
When Full body armor was first used, the only true way they could kill the soldiers wearing it was to use hammers or mauls.. In turn, they started to put malarkey loads of padding underneath..
They also wore a type of chain mail in the joint area where the plates would connect.. In case someone managed to attack there.. It wasn't perfect, but it helped.
Not to mention that when people wore chain mail or splint mail, They also had protective padding underneath as the mail would tear up the skin if unprotected.
It all comes down to how real you want to get.