Stripes

The show likes to introduce new things and immediately forget about them, or never expand on it. Celestia has Blueblood and Cadance as a niece and nephew, but we never hear about if there's a genuine royal bloodline past Cadence. Sombra comes and goes and his time stasis is like it never existed, Tirek and his brother's past are mentioned in passing, the origins and history of Equestria are terribly lacking, and the Buffalo are now entirely irrelevant. Heck, the only recurring species are the griffons, donkeys, and dragons. That leaves the zebras, Saddle Arabians, Yaks, and Breezies without a second mention. There are multiple settings, regions, and cities on the world map that are never seen, and the Everfree (castle included!) are even starting to fade out. The writers need to come back and expand instead of just throwing out more promising-yet-abandoned ideas. I'm hoping these're covered by the movie, but that's a faint hope at best.

Both are very, very powerful in their own right, and they did fight to a stalemate in the finale, but Twilight just has more versatility than Starlight does. Starlight's been running a town under her own guise for years, but she's never expanded her knowledge and expertise past the cutie-mark stealing spell. She definitely has her own capacity to learn and build up in a short period of time. Twilight, on the other hand, has had magical training and refined her abilities with Celestia as her mentor. Magic and it's capabilities as a source of power, a tool, and a weapon have been the main focus of her life before and throughout the show. She's been the vessel of three other alicorns' power, helped defend against a changeling siege, and defeated Tirek (but that was with her friends as well, so that might be debatable). TL;DR, I'd say no.

Ponies seem to have a mixed bag when it comes to understanding different people. Zecora was terribly ostracized while the Griffons and Saddle Arabians are respected, and the original three tribes had some pent up hatred for each other before they banded together. Even then, they were much, much better than how humanity reacts to foreign concepts. And it also depends on how biased the human is in terms of history. A full, all-views included history from the agriculture revolution to modern society would definitely be a rough ride for both parties. And they might want to leave out Animal Husbandry.