Squall maybe master a gunblade which is the most difficult weapon to master. IMO the real message is "the most difficult weapon in his own universe". But Cloud too is not someone who mastered a simple weapon. His sword is made of 7 sword combined together and he knows perfectly how and when to use two swords at once just like when he fought Loz and Yazoo, and later fought Sephiroth.
Maybe? He has mastered the Gunblade. Indeed, I never said in a different universe, I said that in Final Fantasy VIII is stated, also the Gunblade takes ages of training. But that's not really what I meant, I meant that Squall had very strict training since he was in a military academy, so it's obvious and that Cloud on the other hand had no special training and real experiences with swords until Zack's death. Cloud wielding the First Tsurugi in Advent Children doesn't mean in any way he's more capable than other swordsman, a good example is Sephiroth who owns him in many aspect just using a Katana, plus he has gained all the sword's experience through Final Fantasy VII, I'm just stating the difference between them in the beginning. Squall trained for years in a military academy and Cloud was experimented in a laboratory with no real experience with swords, end of the story.
which is also what was stated about quistis' whips and rinoah's blaster edge erm
What? Where in the game is stated that Quistis whip is a difficult weapon to master? Where in the game says that Rinoa's Blaster Edge is a difficult weapon to master...? The Gunblade is a difficult weapon to master, the only stated by the game itself, meaning the most difficult.