Also I have a clear opinion regarding the regulation of gun ownership, i.e. favouring rather restrictive regulations (at least for countries where it currently is regulated - the situation is abit different for countries like the US, where guns are already so spread that regulations would be extremely difficult to implement), I have to admit that the pro-gunners have a bit of an unfair disadvantage when it comes to statistics that prove their position.

It is certainly much easier to statistically measure deaths caused by guns than lives saved by guns - for the latter you rather have to rely on anecdotal evidence as it will be next to impossible to show statistics with a bullet-proof methodology.