Compared to the relatively peaceful modern times, it makes sense that the older, deceased ninja are several degrees more powerful than the current ninja. They were constantly fighting amongst each other until villages started popping up. Then, it seems like the villages may have been in a state of Cold War, where espionage was the norm, with fewer large-scale battles.
Heck, compare Hashirama's large-scale Mokuton techniques to Minato's teleporting technique. We've got attacks designed to affect a larger area and could take out an army vs. a more precise technique that could be used to get in and out of an area quickly (though it can still be used against an army, too).
We've also got the outfits from the past and present. Hashirama and Madara both wear thick armor while current ninja are dressed in all sorts of outfits that aren't standard issue. It might indicate a shift from large-scale battles to infiltration. Obviously, you stick out while wearing armor in another village. They also wear tactical jackets that may or may not be armor, but allow a ninja to carry a variety of tools.
My problem with the super-super-super powerful previous generations is that the storyline is so sudden. The manga started with Naruto's story, and now has veered into this bigger, wider scope where Naruto is a mere player. He'll be the savior, of course, but you enjoy powerhouses and villains so much more when there is dramatic buildup. I would forgive their enormous power if it was built into the story more.
Think of the beginning, when Naruto's prime goal is to be a Hokage. But he left that level behind ages ago, without much fanfare. So we've lost our badass barometer. The story was set to aim for the Hokage. Not the level of those previous. That's what makes it hard to accept.
But again, we know so much about the key players of the previous generation...and so little about the lives of those currently fighting (I'm looking at you Ten Ten), that I can't help but think all this character development is to build in plots and hook new readers for a prequel.
As for the Tsunade comments, I wonder if this isn't the product of samurai vs. ninja. Madara and Hashirama are both dressed in psuedo-samurai attire. I'm sure women would have been excluded from battle if they were engaged in a samurai culture. And historically, there weren't samurai women (openly), but there were definitely kunoichis. So ninja culture would have been more accepting. So I wonder if Madara's comments are born of the age/culture/fighting differences between his age bracket and hers. Tsunade's not at all surprised by his remark and looks forward to proving him wrong. So I get the feeling it's less a personal attack and more a difference of a 100 years of changes. (Well, he means it to be personal, but she's not taking it that way.)
@ donjoseph, right there with you!
Edited by tricksie, 29 February 2012 - 11:17 PM.