"Commercial grade" is mostly marketing speak. They are both consumer level displays. A commercial product in this case means it has features that make it suited to installing in an environment with automation or widescale deployment. The image quality isn't any better.
Generally, if there is only one number being advertised you can bet it is going to be the largest number possible. That would be peak. Not average.
Last edited by EvLee; 11-27-2018 at 08:28 PM.