Flinch resistance for heavies?

[Zigsta]

http://smashboards.com/threads/i-guess-namco-listened.368323/

As I stated in the thread above, this definitely wasn't in the E3/SDCC demo. Can anyone confirm what attacks Bowser doesn't receive hitstun (assuming that's what "flinching" refers to) and if this affects other heavies as well?

 

[Neo Zero]

I was playing earlier and noticed he at least didn't take hitstun from Mega Man's pellets while jumping up from the ledge at the very least.