This is fixed for next patch.
-pre-April2001 durations are all the same
-April2001 onward food/drink have differing durations based on the quality of the item
There were many threads about food/drink durations so I chose the first one that came up in a search:
https://www.project1999.com/forums/showthread.php?p=3753226
As far as the wiki - the p99 developers do not read or edit it, so as loramin said, whatever route the players choose to take.