I see that their are 3 speedruns demonstrating the wrong warp in the any% NES category but I cant figure out how they are executed, Ive tried replicating it but have failed to do so. Is there a route or strategy someone could share?

Can you share some timestamps? I don't recall any wrong warps, would be interested to see what's going on.

In Bison_H's run, In the major skips category, at 10:55 in he uses a revival statue in Salamand to trigger the encounter with Emporer. Its the only run I've seen that uses this trick. I am curious on how its done or if there is possibly other ways to execute this trick.

All of the information was provided by a japanese runner called Hirasaki_Mimi and it was discovered by Mr.Pirohiko a few months ago in the discord, I don't know exactly how it works, but there was a time that Me and Bison were testing this, but basically the trick is done by using the glitches to switch the spells which doing it in a certain way it makes the message of the revival statue (that's why we killed Firion) switch into the emperor one. When the emperor is killed exactly the same way in No Major Skips originally the game show the ending cutscene but because we haven't advance in the story, the game couldn't show the final dialogues to end cutscene and show the credits. That is why we need to continue to play the story normally until we meet Pablo, because that way the dialogue it is shown and we can end the game.

But the new route can only be done in original console due the use of cartridges in an original console, that's why Bison and I lose the interest we have in this route