Yes, after much reading about Vegnagun and it's capabilities, I've stumbled to the point of deciding if it could be possible for Vegnagun to defeat. Though Sin was the strongest being imaginable, with the ability to destroy a whole city and leave a trail of ruin and destruction with is pass. Sin is impervious to any weapon, as has been proved from time to time. It is also immortal, though its body is destroyed, Yu Yevon is able to summon another Sin by bounding itself to another Final Summoning. This being its greatest strength and also its major weakness, for it depends in another Final Summoning to reborn. Now we have Vegnagun, in theory the strongest and most ancient machina weapon ever built, with a cannon capable of destroying all of Spira. Vegnagun does not depends on anything to exist, yet it depends on someone to control it. Its threatening power comes to the price of not being able to differ from friend or foe, seeing all as enemies. Vegnagun was never used because it was feared that, when Vegnagun fired the cannon, it would also destroy Bevelle and even all of Spira in the process.
It was not built to defeat Sin, it's original purpose was to be used against Zanarkand, but since Zanarkand was destroyed, there was no use to take the risk of unleashing Vegnagun. Now if both creatures were placed face to face, we would have a hard time deciding. Vegnagun's cannon would probably pierce through Sin's armor, shattering it and since Vegnagun is not an aeon, Yu Yevon wouldn't be able to merge with it and thus the chain of death and rebirth would be broken. Still Vegnagun requires to charge it's main cannon, meaning that Sin could attack and possibly prevent the weapon from being fired. Vegnagun's best strategy would be long range combat, but Sin also has a cannon of his own, so it would depend on which one is able to fire the cannon first. But, if both of them were to fire at the same time, now it would only depend on who has the greatest power to push back the energy released by both fiends. In the end, either could win, and both could be destroyed in the process.
Now I would like to know what others think about this topic. If it was discussed already, sorry but I never found the thread
It was not built to defeat Sin, it's original purpose was to be used against Zanarkand, but since Zanarkand was destroyed, there was no use to take the risk of unleashing Vegnagun. Now if both creatures were placed face to face, we would have a hard time deciding. Vegnagun's cannon would probably pierce through Sin's armor, shattering it and since Vegnagun is not an aeon, Yu Yevon wouldn't be able to merge with it and thus the chain of death and rebirth would be broken. Still Vegnagun requires to charge it's main cannon, meaning that Sin could attack and possibly prevent the weapon from being fired. Vegnagun's best strategy would be long range combat, but Sin also has a cannon of his own, so it would depend on which one is able to fire the cannon first. But, if both of them were to fire at the same time, now it would only depend on who has the greatest power to push back the energy released by both fiends. In the end, either could win, and both could be destroyed in the process.
Now I would like to know what others think about this topic. If it was discussed already, sorry but I never found the thread