[aidenn0]

It's not meaningful to compare Ah between different cell chemistries, because they may have different voltages. You should convert the Ah to Wh and then compare. For Zn-Mn typical cell voltages are a bit less than half that of Li Ion batteries.

For actual apples-to-apples comparison you will want to compare actual battery assemblies -- the numbers reported from labs often exclude parts of the batteries. In this case they are comparing just the MnO2 cathode weight judging by the quote you posted. Some of the wikipedia numbers on Li Ion will also be from articles like this too, so who knows how it reflects on reality.