Maybe you right, but if not....
There are two possibilities for me,
The Oo-lar possibility.
The guy on the picture from the original mini-comics is Oo-lar.
The picture shows the goodess refering the techno vest to Oo-lar.
That means that Oo-lar, who had lived as a He-Man a short time before Adam take the job, was wearing a techno vest.
This techno vest looks the same, as Adams vest does when he become the He-Man.
In Adams/He-Mans bio they mentioned that "At first, he used
a techno vest with a built-in force field...".
So he was the first He-Man who uses
A techno vest with a built- in force field.
If this is so it leads us to only one conclusion:
The vest showen in the picture/original mini-comic is the same techno vest as Adam´s, and the goodess
gives it to Oo-lar before Adam, but Oo-lar don´t uses or dont have the built-in force field.
In this case they should have said "At first, he used
THE techno vest with a built-in force field...". to be correct.
The question now is where come this vest from, because in the picture the vest is already there.
Do it belong or was invented by a "He-Man" before Oo-lar?
Or is it just a kind of Soldier Armor? (without build-in force field)?
The After Adam possibility.
In Adams/He-Mans bio they mentioned that "At first, he used
A techno vest with a built-in force field...".
So he was the first He-Man who uses
A techno vest with a built- in force field.
The guy in the picture is not Oo-lar, but a He-Man who appears after Adam/He-Man, receiving Adam´s/He-Man´s techno vest from the goodess, including the already from Adam used build-in force field.
hmmm?