High voltage

SORRY that is NOT TRUE. Yes, a higher rated output unit will put out the same as a lower one IF THE BATTERY is back up to normal and IF THE loads on it are "same as" a "normal car."
Sometimes I think you just like to be contradictory. That's exactly what I wrote. Running the battery down, such as leaving the lights while parked for the day, is not what most people understand as normal every day use. LOL
There's two problems with high rated alternators
2. A high current demand situation is when a battery is run down. A discharged battery will initially suck a lot of current. If an alternator is capable of providing over 40 amps for recharging, that's way above what the wiring can handle. Its also not doing the battery any good