Prior to the Hong Kong incident, and given the reputation Cherno has with The Serbian Wall and such, and only supported to be one of the most strongest, defensive and slow Jaeger to date.
I know that if Otachi's natural acid OBLIERATED Cherno's Reactor armour was a little silly and should have endured atleast 30% more then it did, but most of you saw how that steel turned to liquid in seconds.
Cherno had no chance of dodging that kind of weapon, due to it being so slow.
All that armour, wasted.. Just wasted.
WHY!