Did you know that resists give you % ad/ap dmg reduction and not flat dmg reduction?

Was it only me? I thought that 100 armor blocked 100 damage I must be retarded

Level 1 : http://prntscr.com/j29jtt Level 18 : http://prntscr.com/j29kgw

No wonder tanks need 3 people to die,like wtf is this shit,they buy armor boots and randuins and you deal like 40% of your initial damage