No, apparently it depends on yours.
Nope - it is based on the notion that different people will have a different perspective depending on their own experience and background.
So, just as an example, my wife's family are catholic, she went to a catholic school, pretty well all of the social activities she engaged in as a child were with the practising catholic community associated with her church and school. That community was pretty insular, they had an informal list of tradespeople from their community, so would always employ catholic plumbers etc etc.
Ask someone in that community whether they were particularly religious and despite going to mass every week (at least), attending catholic schools etc etc, they'd probably see themselves as middle of the road in terms of religiosity as everyone else they knew also went to church every week, sent their kids to the catholic school etc etc.
But from a different perspective, all of those people are in the highest grouping for religiosity as most people don't do to church, send their kids to catholic schools, only employ plumbers of their faith etc etc.
And of course the second perspective is much more akin to the societal norm that the first.
So I'm not arguing that everything depends on my perspective - what I am saying is that in a country where only one in ten people goes to church it isn't credible to claim that someone one of those 10% most religious (in terms of attendance) is somehow 'not very religious' - in societal terms they are extremely religious.