Although I can see where you guys are coming from, as a consumer I would hope the manufacturer would address this if it were an issue. Although "pressure washers aren't considered the norm ", they should be in Canada with the number of car washes around and season passes offered.
I wash my cars at least every other day throughout the winter and have never had a sunroof/t-roof that leaked in a car wash. I've owned Camaros and Corvettes with T-roofs... VW, Nissan, Mazda, Cherokee, Grand Cherokee, 300M, Magnum all with sunroofs and never had a leak. Maybe I'm just lucky :-))
I could see in the first year of manufacture some teething issues that may cause leaks under pressure but in this day and age the manufacturer should be able to solve the problem in following model years. If not, something seemingly as trivial as this can drive customers away.
That being said my Journey leaked with just standing water on it, but seems to be fixed. Although a nuisance it seems to have been handled very well, in my case, by the Dealer.
Simply Googling "Dodge Journey sunroof leaks" leads me to believe there may be an issue, but we can't always believe everything we read on the net :-))
Just my 2 cents...