Asslamu Alaikum all,
I think we have to distinguish between two things, namely: Whether it is wron or right to date with a younger/older person respectively, or what we find about that. Simply put there is nothing wrong with that according to our beloved Koran and Sunnah. What we find about that is rather not of much importance if we are true moslims. However no one is forced to date with older or younger person. Thank Allah we have the freedom to CHOOSE..maashaa Allah.
Wassalaam.