Red dots on handguns are faster and more accurate than irons. The gap between them gets larger the further you are from the target.

The data is there.

But, the bottom line is taking advantage of the edge in speed and accuracy that a dot gives you require solid fundamentals. The advantage of a red dot on a handgun is icing on the cake.

Most people don't have the cake.

The best part is I remember this exact debate regarding irons on rifles. The "muh I qualified at Pendleton out to 500 meters with irons, it's better than an optic" crowd was huge.

I was in that crowd.

I won't make that mistake twice.

All that said, if you don't have a fundamentally sound presentation, and you're not inclined to practice, sick with what you've got.