If this show is overrated, so are most of the shows you listed, XX55XX. I watched all those shows in my childhood and can say with up most certainty that MLP has just as much quality and then some. MLP has both fantastic animation and relatable characters, most things shows in the 90s had either one or the other of. Sure all the fan work on the internet helps, but that is just a testament to how good the show really is. When this many people outside the target audience have fallen(and are still falling) in love with the show, you know that the show deserves every bit of praise it gets and is in no way overrated.