Lets take my car as a "power for power example"..
When my car had a T56 (6 speed manual), I dyno'd anywhere from 620 on a Mustang dyno to 675 on a Dyno-jet..
With the T56, the best '60 I pulled was a 1.61..
Fastest et was 9.98 @ 134
Now my car has a built (Trans-brake, shift-kit, 2800 stall, etc.) C4 (3 speed auto).. My dyno numbers are down, about 600 on a Mustang Dyno, 660 on a dyno-jet..
The best '60 Ive pulled on the Trans-brake is 1.32..
Best et of 9.34 @ 140..
And this is my personal car that I'll gladly post pictures and timeslips of, if you'd like..
A properly built auto will run faster then a manual, all day, every day..
