There are many universes in existance, some are almost similar to ours, and some are completely different altogether.
According to this multiverse guide that I "Borrowed" from Stewie, this is an Equestria where Age-Regression is quite popular. And seeing as Age-Regression answered the question to eternal youth, Equestria is now 1000 years technologically advanced.
Do I even need to issue the warning this time? More foals for you, then.