It was supposed to be a way for AD ranged carries to deal with High hp bruisers but BotRK is good on every AD champion. It's insanely cost effective, extremely easy to build (400g for each starting item), highly effective build path, amazing against squishies and just blatantly overpowered.
Armour shuts it down fairly effectively. The first item of almost every tanky bruiser is (or should be) sunfire cape. If the enemy ad is becoming a problem you then build randuins and they just cannot do anything. Botrk is not THE rush item for every carry, people are really overreacting. It is 50 gold less than BT, and doesn't provide the ad needed for a lot of the carries with heavy AD scaling abilities (graves, ezreal, cait and MF), but is still a viable rush for attack speed scaling champions.
Meanwhile, some notable results from Hannover. Gambit utterly stomped Blaze, Millennium and Blaze beat Fnatic.
If the enemy ad is becoming a problem you then build randuins and they just cannot do anything.
It is 50 gold less than BT, and doesn't provide the ad needed for a lot of the carries with heavy AD scaling abilities (graves, ezreal, cait and MF), but is still a viable rush for attack speed scaling champions.
Imo botrk isnt as good if you are going for crazy damaging crits. Like my draven i prefer bt because it adds a considerable amount of damage to the crits. I think if you get full stacks on the passive and you are crit based it is more effective
iem day 1