Did you bother to read your link?
Harvard said:
“Overall, our results show that the United States, which has the most firearms per capita in the world, suffers disproportionately from firearms compared with other high-income countries,”
Harvard claims a correlation between the number of guns and gun violence rates.
You claim the gun laws in the UK, et al. are the reason for the lower rate of gun-related violence in the UK, et al, re: the US.
Even YOU can see these are not the same statements -- and even YOU can see the Harvard statement does nothing to support your position.
So, we're back to...
You, repeatedly, claim the gun laws in the UK are the reason for the lower rate of gun-related violence in the UK, re: the US.
I, repeatedly, challenge to demonstrate the necessary relationship between the gun laws in the UK and that lower rate.
You, repeatedly, respond by tucking your tail and running away from that challenge - because you know you cannot demonstrate any such thing.
Thus, I continue to accept your surrender.