The thousand eyes gives you 10% melee and ranged resistance (lowers the chance for enemies to hit)- the light armour "only" gives you absorption (lowers the enemy damage). I think it's quite good on a dodge build - but kinda suck on a parry build... and I would always parry-build a marauder because he can only reach max 13 agility with a book/grimore. The thousand eyes are better on mutants, who can be dodge machines.