Isn't it a bit more complicated than "analogue good, digital bad"?
Winding dials can be better for quick comparisons, and for expressing rate information and especially as an array of readings. Digital can be better for exact reading, providing errors, and careful use of colors can highlight both.
I don't see a graphic of tanks with numbers next to them being at all inappropriate to provide information about three volumes/masses (although the meters do seem to read volume/depth here).