Hate to say it but I agree.
It'd be one thing if the game was *all* super and hyper cars and it was done in the name of gameplay because there's no other choice. But when considering the cars you'll likely find in that game - and it'll be a mix of those hyper and super cars, but also a selection of rally cars, pickup trucks, vans, jeeps, etc, it makes even more sense to limit the true off-roading to those vehicles that are custom built to handle it. So even from a pure gameplay standpoint its disappointing.
But hey, DriveClub won't have that problem because there's no off-roading. Which, when you think of it is kindof strange coming from the Motorstorm guys, but probably makes for a well needed break from tradition.