I question the wisdom that says that everyone will be super close. Surely Sky and Quick Step will be most movtivated by far, so even though there is nothing else going on that would make big differences, that it itself will be the difference. I will also add Garmin as an important team, simply because there TTT machine is top nonch.
Having said that, is TTT on road bikes going to make a difference to anything? I am inclined to think that it would simply add another layer of unprecditablity to the race, but it would be helpful to here from those who actually ride as to how it would affect things