User blog comment:PerhapsTheOtherOne/Speculative Spitballing: Goliath/@comment-25555436-20150608190144

....Wait a minute, why are you so sure CR's shots would be No Selled by the Goliaths?

Have we been told somewhere? Have we been shown? As far as I know, we haven't.

In ep10, Oobleck only said that if Ruby shot at them with CR, it would do nothing but agitate them. It doesn't mean they would Null the damage, but that it would not be enough to kill them quickly because they are just that tough, and as such they would have enough time to respond. And even if Ruby could kill one in time, the others would have more than enough remaining time to stomp her if they didn't do it already.

There's a difference. They are like natural tanks, actually. Tanks are not inmune to everything, a sniper rifle of the right class with the right bullets can easily destroy one, but they are so tough they can last quite a good deal of time (unless they malfunction, which happens often) before breaking down.

Also, don't give them a "Macho Badass" medal yet. All Grimm are pussies, all the ones we have seen are pussies, and the evidence of exceptions is arguable at best. As such, we should assume these are just big pussies until shown the contrary.