Isn't that the same with e.g. human brain? Computer program can compute billions of equations, whilst human will struggle with just one.
Perhaps, but it doesn't indicate anything new or interesting about cognition or biology.
For example, Minecraft in Minecraft [0] is (while impressive) slow and inefficient too, but it doesn't tell us much about humans except that some of them are weirdly ambitious in their projects.
Human brain does a lot more at any given time than just whatever you're consciously thinking about.