It IS easy to up the .45 Colt ante.
I was refering to "The .45 Colt and .44 Mag have similar ballistics except that the .45 Colt is a larger caliber and operates at lower pressure" statement.
In standard factory loads, that's an overly broad statement that can cause confusion for people not familiar with the calibers, pressures, and ammunition available.
For the non-reloader, WalMart .45 Colt loads will not have similar ballistics to WalMart .44 Mag loads.
Most of the hotter .45 Colt commercial ammo has to be special ordered, and you have to know it exists to know where to look for it.
Regular .44 Mag ammo is widely available, on the other hand, and can be found all over dealer shelves.