I think, the normal human could get a skill too. So the feat is equal to 4 stat bumps to your lesser important stats.
BUT, there are a lot of character concepts, usually dismissed by optimizers that are good enough with the standard human.
You array allows for 16,14,14,14,14,11 which translates into:
Barbarian in medium armor: 16 Str, 14 dex, 14 con, 14 wis, 14 cha, 11 int. A leader type. As a berserker, every stat is useful.
Eldritch knight again in medium armor: 16 Str, 14 dex, 14 con, 14 int, 14 wis, 11 Cha
Bard, valor: 16 Str, 14 Dex, 14 Con, 11 Int, 14 wis, 14 Cha. You may swap cha and Str, if you want to cast more direct spells
Ranger: 16 Str, 14 Dex, 14 Con, 11 Int, 14 Wis, 14 Cha. Maybe the hardes one to recommend. Usually you only need 4 good stats and you can live well with lower 5th and 6th stat except for story reasons.
So for some corner cases, the standard human gives you good stats from the beginning, which the variant does not offer.