I got a question for any DBZ fans. (Hard question)

[pastro243]

allaboutthegames885 said:
Let me take a crack at this question: Future Trunks (from the Androids Destroy Everything timeline)
got his sword from Son Gohan in that same future as a last request (as 17 and 18 killed him). Trunks from the main timeline got his sword from Taipon. I hope that cleared things up.

This.

I think its coincidence that the swords look alike, or probably the movie creators said something like "oh, lets make tapion give him  his sword, OH AND LETS MAKE IT LIKE THE ONE HIS VERSION OF THE FUTURE HAD SO THAT WAY IS COOLER" or something like that.

It would match because in the series Trunks explains that no matter what he did in that time, it wouldnt change his own timeline, meaning that both universes share  a lot of things but they differ in some like these too, especially after the series timeline was "changed" by future Trunks going there and that would explain possible differences.

Another, and very probable thing, is that its a mistake and they didnt ask the question you asked to us to themselves when they made it. Meaning that its a plot hole or something like that.

Anyway you take it its valid I think until the movie or series creator speaks what is their truth about the thing, but they wll probably say:"oh, we didnt notice the problem with that, well, it doesnt even matter".