Well, they’re two different words. So, it could be beer vs. wine. Or it could mean one kind of wine and another kind.
shekar (translated as beer)
shay-kawr’
from ‘shakar’ (7937); an intoxicant, i.e. intensely alcoholic liquor:—strong drink, + drunkard, strong wine.
yayin (translated as wine)
yah’-yin
from an unused root meaning to effervesce; wine (as fermented); by implication, intoxication:—banqueting, wine, wine(-bibber).
From Strong’s Dictionary.
Beer brewing ping.
I see the Midianites more as beer drinkers than the Hebrews. : )