Normal humans in 1e DIDN'T HAVE STATS AT ALL.
Interesting assertion. When I get the chance, I'll do a reality check out of the modules.
And I have. I'm right now looking at the original
Temple of Elemental Evil.
Turns out you're right...but you didn't go far enough.
In fact, many NPCs
with actual class levels aren't started out at all either, beyond class level, HP, gear, alignment and XP value. I spotted NPCs as high as 2nd level with that disability. (See the Daughter at location 23, p12, the guards at locations GT 1 & 4, p19, the Brigand Leader at location 7, p22 and the Sergeant at location 33, p26 for examples of statless, leveled NPCs.) FWIW, the Ogre at location 24, p24 has no stats either.
(This is not unique to
ToEE, either- I found similarly unstatted NPCs with class levels in the Lankhmar adventures, up to
Tenth level: see
Nehwon, p13 for the band of Coroval the Courageous. He's 10th, has 2 4th level assistants, and another 15 1st level thugs at his disposal...all statless. Ditto the merchant caravan on the same page: NPCs with class levels and no stats.)
There were also level 0 types who had pricey weapons & chainmail and other goodies, like the Stonemason on p13 (military pick, chain & shield).
This says to me that the mere fact of being a 1st level fighter with listed stats isn't particularly or inherently über special other than denoting that you're a PC, so you get fleshed out. The "Regular Joe" NPCs don't have stats because, by and large, they don't need them.
And if the DM sees you're going on a killing spree through Hommlet, I'm sure he'd feel just fine if he differentiated between the stats for the "daughter" and the other unstatted fighters you'll encounter.
The fighter has access to abilities (percentile strength) that normal humans can NEVER have.
Well, since some of the "normal humans" ARE fighters- however low in level- granting one exceptional strength to stiffen up the challenge for an oversized party, for instance, would not be breaking any rules.
And you have no problem with every single PC farmboy suddenly stumbling onto this sort of provenance? You don't see that as being a step up over Joe Average?
No I don't- see above.
That list I presented was non-exhaustive. I could go on with other ways Joe Average winds up with gear that costs serious $$$.