The 40% resource upgrade at Mt C needs to be put into perspective. Mt C was such a small resource before the upgrade relative to its peers and even after the 40% upgrade is still a minnow relative to pretty much every other lithium resource out there.
Think of size like a salary. Mt C is a $5k salary whilst most of its peers are $100k+. A 40% increase raises it to $7k. It's still puny relative to $100k+.
Using your analogy, that's like saying AVZ has a potential salary of $100M dollars I guess,
but reality according to that analogy, AVZ is unemployed
MT C is employed and has a salary
BOC, one of the biggest resources of copper in the world, unemployed since 1991