Yours has not been endorsed by the Serious Eats staff.
Also
They obviously have broken some physics laws to be able to make steel that conducts heat better than aluminium. I suppose it is the cost of R&D that you pay for. /sarcasm
So...it could of been phrased better by the Serious Eats people, but I think you are missing the point. By focusing in on the fact that aluminum conducts heat better (which it does) you are forgetting that the steel (or for that matter cast iron) has a much higher thermal mass, which is what you need for any cooking when you are trying to develop a crust quickly. The problem aluminum has is because it has so little mass it has little stored heat. Sure it can pass it along to the pie quickly, but even though it is a great conductor by the time it is hot again it's too late.
This is why the thicker the steel the quicker to cook times; the thermal mass is increased so the amount of stored heat is increased - to the point that the 1/2 steel can cook a pizza in around 2 minutes, and can due multiple pies on after another. The trade off is weight, and cost, which is why I opted for the 3/8" here:
http://www.amazon.com/gp/product/B00LBKWSGC/?tag=skimlinks_replacement-20
I also liked the idea it will fit my 22.5 inch Weber. Pre heating the oven for 45 minutes in the summertime maked the kitchen too damn hot:fanning:.
Serious eats does a good write up comparing the .25 and the .5 steel and the Lodge here:
http://slice.seriouseats.com/archives/2012/10/the-pizza-lab-baking-steel-lodge-cast-iron-pizza.html
I would also recommend to pizza lovers this site:
http://www.pizzamaking.com/forum/index.php?wwwRedirect I would say they take their pizza making as serious as we do knives:biggrin:. This was the site that got me interested in steels to start, then I received MC which sealed the deal.
So no, they are not breaking any laws of physics, and yes the wording is poor. Some marketing guru probably wrote it:laugh:.
Zwiefel and Wildboar, I believe the cast iron would be just as good if the thickness is the same. Cast Iron has a small advantage in heat conductivity, I don't know how the two compare regarding thermal mass.