Talk:On Your Marks/@comment-5837525-20160315144805/@comment-4531340-20160321021038

I think Impy explained the reason he compared this episode to Princess Twilight Sparkle sufficiently (and I agree with him there) - but to elaborate, he's not saying that it's an "event" episode, with a villain and whatnot, he's saying that they're dealing with similar themes - Princess Twilight Sparkle dealt with Twilight's worries as a new princess, and this episode will (presumably) deal with the Crusaders' worries as newly marked ponies.

I think it can easily be summed up as "This episode is (or at least presumably will be) to Crusaders of the Lost Mark what the Princess Twilight Sparkle 2-parter is to Magical Mystery Cure"