Yes, but it probably doesn't tell the whole story.

There's basically a few axes you can view this on:

- Number of connections and complexity of connection structure: how much information is encoded about how to do the calculations.

- Mutability of those connections: these things are growing and changing -while doing the math on whether to fire-.

- How much calculation is really needed to do the computation encoded in the connection structure.

Basically, brains are doing a whole lot of math and working on a dense structure of information, but not very precisely because they're made out of meat. There's almost certainly different tradeoffs in how you'd build the system based on the precision, speed, energy, and storage that you have to work with.