The difference in that, is that it’s fanmade. I’d rather Romance in anything official stick to what it’s done other then in Equestria Girls. Either by making secondary characters like Shining and Cadence marry, or have any romantic plots that relate to known characters get upstaged by the comedy. Like Rarity’s part of Best Night Ever, and the entirety of Hearts and Hooves Day & Simple Ways.
I just fear the day if Flash Sentry were to ever become a recurring character in the show and as Twi’s boyfriend no less. No matter how much they flesh out his personality. I feel that’d be about as bad if not worse then jump-the-shark scenarios like making all of the Main 6 alicorn princesses or an out-of-nowhere 7th Element of Harmony :P Cause it messes with the messages of the show, this is Friendship is Magic. Not Love is Magic :S