I won't enter the debate, but the partisan bikkering online over this is quite astonishing. What I will add are two comments.
1: We were unprepared for rain that day in South Georgia. We found ourselves ashore, it started to rain, and we kept shooting. None of us had anything more than a hand towl or plastic bag for protection of our equipment. There was nowhere to go for shelter, and short of leaving our cameras in their bags nothing to do except keep shooting in an extraordinary environment.
2: If there had been 45 Nikon and 5 Canons in use, rather than the other way round, I think it likely that the shoe would have been on the other foot.
I have used my Canon 1Ds and 1Ds MKII in snow stroms, dust storms, heavy rain and worse. I've never had one die. Similarly in past years with Nikon gear. On my trip to Namibia last year the front element fell off a Hasselblad lens on its third day of use. The same thing happened to a new Canon 24-70mm f/2.8L on a shoot in Costa Rica a few years ago.
Pros and ardent amateurs use their equipment in all sorts of conditions, sometimes harshly, and sometimes not. But gear does fail. Sometimes its the elements, sometimes abuse, and yes, sometimes poor craftsmanship and materials. But no one should draw any unwarrented conclusions from this report. There just arent enough facts available, and the sample was highly scewed statistically."