To be honest, I don't actually care as long as it's the same good old Rainbow Dash. I do question and overcomplicate quite a bit of stuff too, but it's best not to question it since cartoon logic isn't always very logical.



I don't have an actual actual answer for you, but I'd go with the second option since her power is doing everything fast, though, I think Hasbro wanted to have a better representation of Zapp in human form too and this was the only way to do so.