How to handicap the monsters
Who wil get depowered in a King Kong vs Godzilla remake?
Let us first examine what
Toho and Universal had to do to make this matchup fair: the gorilla has to be increased in size and given electrical powers to even stand next to Japan's mightiest monster. In other words, the lizard was handicapped- in a "REAL" fight between these two monsters the American simian would have NO CHANCE of winning without Donkey Kong power-ups. So the question becomes- how will the handicapping be in the King Kong vs Godzilla remake? A King Kong vs Godzilla remake may see the lizard be downgraded this time instead of the ape being powered up.
Godzilla - a little lizard
Sounds lame, but....
For example, a King Kong vs Godzilla remake could depower the dinosaur by shrinking his size down to the giant gorillas to make things even. This sounds lame, I know, but it is one of the balancing factors that must be considered for a King Kong vs Godzilla remake, unless you would want to see a 10 minute King Kong vs Godzilla remake featuring the ape getting burned to a crisp by the dinosaur's breath weapon. So, yes, theoretically both monsters can be brought down to a manageable size in the King Kong vs Godzilla remake.

Balancing out King Kong vs Godzilla
No breath weapons, please!
Another option is to eliminate all electrical powers or fire/breath weapons in the King Kong vs Godzilla remake. This means both monsters would pretty much be given full reign to duke it out and fight with their fists in the King Kong vs Godzilla remake without any special powers. In fact the creative team can make it that the dinosaur's throat got damaged and is unable to use his radioactive breath or perhaps not even mention or acknowledge that super power in this King Kong vs Godzilla remake.

The Final Word about the Final Battle
Let's Hope for a King Kong vs Godzilla Remake
It is important to remember that the matchup between these two classical monster is not innately even, and this has to be addressed in the King Kong vs Godzilla remake, just like it was addressed in the original movie. There is no doubt that if a King Kong vs Godzilla remake goes into production this will be one of the most controversial aspects of the King Kong vs Godzilla remake. Both fans don't want to see their favorite monsters be tampered with - Big G fans want a full powered monster to use his breath attacks, and KK fans wants the ape to overcome the odds and use his jungle prowess to win. Let's hope a
King Kong vs Godzilla remake happens and we can debate about it then.