I knew that about the F9 being 335 and not 355, but I was just saying that its a possibility. Brad has some unusual chord phrasing on Runaway (and maybe With You? I don't know, I'm just glancing over your tabs)
but we are getting off topic here. It is most likely that he is playing a G5 in standard. And if the picture was taken exactly when they were playing said song, then it is War. Sure, they could have taken that picture at any point throughout rehearsals whether it was for War, ALITS, Pictureboard, Devil's Drop, Through the Fire and the Flames, Feels Like Forever, Saviour, etc. I don't know, Mike and the guys don't run that Instagram page (unless it is Rob or Brad secretly.
We're going to find out in about 6 hours anyway.