Chuckles, you read correct the first time but power loss is relative. I was trying to get at a stronger spark getting a little more combustion pressure out of bad (rich/lean) mixtures and rough condition (lots of boost or rpm or N02 or WI)
Ppl saw CDI or other cool multi spark per cycle setups really in big camed, holley'd street V8's first, as large valved heads aren't conducive to good low rpm combustion efficiency, coupled with the afore mentioned generously jetted 4 barrels.
Think of all the twin plug per cyl industrial motors, alfa's, aeroplane's etc. There must be a reason other then maintenance durability me thinks.
Guess you could try tappin some plugs to .10mm and go for a drive
I think the gist of the thread is that, most RB's out there should be able to run .80+ minimum, if not theres a sad ignition component somewhere.