In reply to sam the man: OK, some of the things that could make people think the grit is the best:
Best bouldering in the counrty? Yes
Best Single Pitch Trad in the Country? Yes
Largest volume of climbs for sub VS climbers (i.e most of the climbing population)? Yes.
Most convenient venues for a large amount of the population in terms of distance to drive and walk in: Yes
So the grit has a lot of plus points for it, obviously it's going to score lowly on climbs with an adventurous nature (although I've heard some Hen Cloud climbs might fall into this category!) and there aren't any day long climbs unless you have a particularly bad day out.
So I guess in my opinion the mags are right to have a grit bias, as for the general climbing population it does contain a lot of factors to make it the best climbing medium.