There were 1300 cases of armed robbery in the US in 2024.

That number seemed way off to me. Not sure where you got it. Perhaps in some kind of analysis of a sample/subset of cases?

Robberies all involve violence or a threat of violence, so calling out armed robbery specifically seems too narrow. Someone says they have a weapon and robs you, that’s reported as a robbery. If the police catch them and they are unarmed, that’s still just robbery, not armed robbery. But it seems relevant to the point in this discussion.

Anyway, New York City alone had almost that many robberies in the month of December 2024, and had 16000 robberies for the year in 2024. Source

The number I see for the country in 2024 is ~625000 robbery cases from FBI data. Just looking at armed robbery is more like 100k cases (200k if you include strong arm). Source