I've done that as well and still find my jobbers sometimes giving main-eventers all they can handle and sometimes win.
EXAMPLE:
Barry Horowitz:
OVR: 27
Strike Power: 10
Grapple Power: 15
Submission: 5
Strike Defense: 10
Grapple Defense: 10
Speed: 80
Jump: 80
Agility: 80
Adrenaline: 55
Recovery: 5
Toughness: 5
Durability: 30
Charisma: 10
Tag Team: 30
Razor Ramon:
OVR: 60
Strike Power: 35
Grapple Power: 85
Submission: 5
Strike Defense: 65
Grapple Defense: 60
Speed: 35
Jump: 25
Agility: 25
Adrenaline: 65
Recovery: 30
Toughness: 80
Durability: 85
Charisma: 55
Tag Team: 70
Match #1: Razor wins via submission, ~6 min;
Match #2: Razor wins via pinfall, ~8 min, both men hit two finishers, Razor's head was seriously damaged, and, watching, Horowitz was in control more often than not;
Match #3: Razor wins via pinfall, ~3 min, finally a squash match.
My very non-scientific analysis:
In match #1, Horowitz was countering everything but couldn't get much going himself so, eventually, Razor's quality showed through. I hated the cheesy submission ending that I see to see so much (matches ending in abdominal stretches FTL).
Match #2 was much more back and forth and is a match I've seen the jobber win many times. Horowitz was a bit unlucky and Razor pulled it out.
Match #3 was the squash match that should be, but isn't, the norm. Razor dominated, hit his finisher, then got the pin.
Now I have Razor set to upper-midcard (main-eventers are 70+) so he's not set to John Cena levels but with the point and power differential between the two, I should get a lot more matches like #3 than like the others, but I don't.
I do have recovery and speeds generally set low because I want a slower pace so it's possible that this enables Horowitz to squeeze in a few more moves here or there but I don't think that accounts for it, particularly considering how low his power levels are set to and the lack of power moves in his arsenal.
I do see Horowitz counter way more than I think he should but I can't see a way to change it without changing it for everybody. I still may tweak it though and see what happens.