Such words leave room for doubt. I understand that some nerves have been preserved. Some men have a rather long but satisfactory recovery from erectile dysfunction. Others remain permanently impotent (even with so-called "nerve-preserving" surgery).
In all cases, there are solutions. Stay strong as well as your partner (if by chance there is one). While rigorously engaging in rehabilitation (IPDE5, pump, ICI,..), try to focus on the pleasure you can experience by keeping physical contact and touch (over which you are the master) as much as possible more than on the amount of nerve preservation (which you have no control over).
The surgeon did the job, now it's your turn !