Quote Originally Posted by Arjonius View Post
Guarantee? What assumptions are you making? And not making? Also, how do you arrive at the difference being huge as opposed to something less substantial?

It would be a whole lot more helpful if you'd provide your thinking instead of just saying I'm wrong. I may be, but I don't see why from what you wrote.
Actually if you weren't so quick to post you would have seen the post directly above mine outlines a few of the reasons J8s should be an iso.