Sure there is. Glock 21. I think he mistook the USP 45 as being 13 and was saying that Glock, HK, and FN have models that have 13 or more. Just a simple mistake.
Do I think you need more rounds? No. But I had a great convo with a patrol/SWAT officer once. "In all my years of responding to incidents, many of them self defense, I never once encountered a person who said, "I wish I had had fewer cartridges in my magazine"."
Guns don't kill people. Apes with guns kill people! - Robin Williams