BLADE OF THE RUINED KING vs CLEAVER

Its thought to be a 3rd buy must for ezreal, and I thought the same. But with the new runes it opens up the game for lots of new build paths and I personally always thought black cleaver would be perfect for ezreal as he is an AD spell caster, but it didnt make sense last season as you overcaped in cdr and it didnt gave you as much as other items did.Now cleaver gives you:64 AD400 HP20% CDR (24 AD)24% BASE armor penetrationThis is perfect for Ezreal as although he is an AD spellcaster lethality makes him fall off extremely and not make any damage to real tanks. My main problem with building BoRK third now his attack speed nerf, its quite noticeable that you dont attack as fast as you used to and making BoRK not as effective as it used to. Still most probably BoRK does more damage overall (depends who youre facing) but dont forget the 400 health extra youre getting with cleaver it makes for the other adc virtually impossible to duel you mid game so he has to either run from you or be bursted down. This build makes you very present during teamfights and very difficult to kill when youre reseting your E cd effectively.