Nor should you as you wouldn’t be qualified to do so.
So you’re just acting bearish but in reality know they will kill it? We won’t know iPhone X sales specifically, but selling over 80M iPhones and 35M X will be a resounding success. Not sure what you expected, but if it’s more, you are being unreasonable.
Get some popcorn and a comfortable chair. Feb 1st will be full of excuses.