I think that the rock is a distinct possibility :-)

Seriously though, photos are so unreliable, that I don't think anybody should even ask "if it looks 22-8, or if it does not".......
We have all seen 12 lb'ers that looked 8 lbs, and 8 lb'ers that looked 12......

But the fact is, this fish was reported to be 29 inches long, and 25 inches in girth. This info, along with this shape, says that beyond any shadow of a doubt, this fish did not weigh an ounce over 19 lbs, but more likely was closer to 18.
This is not just MPO, but rather, it is straight up fish science.

Peace,
Fish