Yeah, Kevin, that's the kind of thing I wish I'd said

This is not a tennis match, or any sort of national contest. 

The issue is whether gun control has any utility whatever in practical control of violent crime. 

The author of your link assumes — and never checks his assumption— that gun control laws as applied in the UK reduced violent crime in the UK. 

 That is demonstrable gibbering nonsense by circus clowns on stilts.