Have you ever seen an adult piloting a Mecha? I have only seen kids or teens, maybe some "post-teen" adults in their twenties, but any other who jumps inside a mecha is destinated to die soon or later XD.
Applebloom...you must understand the rule number 1 of mechs "All powerful mechs must be operated by pre-teen boys or girls." it simply wont work otherwise. We're all like 20 or something Sweetie Belle cant even cook and don't let me get started on Scootaloo, so you're the closest thing to a pre-teen we have! Here's the guide! Get in that giant death robot!