You get the sense that Josh was blowing the reporter off. Maybe he is ticked that "W" was a bomb at the box office. This from Collider.
...The way he spoke to us about Jonah Hex made it seem to me like it’s a long shot for him actually doing the role. While he spoke highly about Neveldine/Taylor and said all the right things, I didn’t get the sense that the project really excited him...
And here's what Josh said:
Q: You will be playing a comic book character soon. You’re doing Jonah Hex, right?
Josh: Nope.
Q: You’re not doing Jonah Hex?
Josh: Don’t know yet.
Q: Have you had meetings with Mark Neveldine and Brian Taylor?
Josh: No.
Q: Do you want to?
Josh: Don’t know. I have a very tough time deciding, except for “Milk.” I don’t know what I’m going to do. I don’t know. It’s a very good time. It’s a very good time and I don’t want to slight anybody and I don’t want to insult anybody, but the fact of the matter is with more decisions comes a little more pressure. For me, I just try and find that thing that really resonates. There’s one thing that Tony Scott’s doing that I love and that I really want to do, and trying to find the timing and all that...
Check out the full interview at Collider.com.