Remember, peoples' monitors are somewhere between 1280 - 1920 pixels wide, so when the picture is 3456 pixels wide, how much are people going to be able to see? Mine is 1920x1080, and a 25 inch widescreen, but I can only see a yellowish bar and a darker brownish/yellowish bar on my screen!
Another problem with huge pictures is huge file sizes. This is over 7mb, and that's massive. Shrink the picture down and resubmit it so more people can enjoy it.