So if you're wearing all light armor and have all the perks you get a 50% higher armor rating, weightless armor, 50% faster regenerating stamina and a 10% chance of avoiding melee damage. 10% chance to reflect melee damage back to the enemy if wearing all heavy armor. Additional 25% armor bonus if wearing all heavyarmor.

Heavy armor weighs nothing and doesn't weigh you down. 50% less stagger when wearing all heavy armor. Half damage from falling if wearing all heavy armor. 25% armor bonus if wearing all heavy armor. Unarmed attacks with heavy armor gauntlets do their armor rating in damage.

10% chance of avoiding all melee damage if wearing all light armor. Additional 25% armor bonus if wearing all light armor. Stamina regenerates 50% quicker in all light armor. Light armor wears nothing and doesn't slow you down.

25% armor bonus if wearing all light armor. But heavy armor has a perk that makes it completely weightless. The basic concept is that light armor is lighter so its better for stealth and movement at the expense of defense. Seriously, seems like they screwed up the balancing big time.

Max armor rating skyrim