I really hate it when peoples talk about others game in another games forums but, for Tekken, it's true that they have a lot of characters but most of them are clones with a few different moves. Harada is cheating the Tekken fans but they don't even know it. If you subtracts all the clone, they would have only about 25 characters at most. Not to mention, what's the point of having so many characters if you see only 10 of them are being used throughout online and even tournaments? Tekken might look like having a lot but it act6ually isn't. It seem that you only care about numbers.
Not to confuse you, but Tekken has an adoring fanbase, and unlike DOA, has been respected in fighting game communities more-so. Harada isn't cheating fans of Tekken. It's actually admirable regarding what he's done by "poking fun" at DOA with the inclusion of swimsuits and even mud/sweat on characters. It's certainly not as detailed as DOA's, but it also shows that it's no large admirable feat to be claiming as Team Ninjas has, when it really doesn't affect the game play or mechanics, and fighting games are all about game play and mechanics.
DOA still hasn't even entered the world of "character customization," which is something I thought TN would have included for DOA5 many years ago before DOA5 was even announced. That's not just something Tekken has, but also Virtua Fighter.
On a side note, (not claiming that DOA4 invented "bounce mechanics" as far as fighters go, but) after DOA4 was released, both Virtua Fighter and Tekken also adopted some form of "bounce" for Tekken 6 and VF5. Dead or Alive has had a unique presence in the world of 3D-fighters, but DOA5 is the one that seems to be taking note from Tekken and Virtua Fighter this time around, with lengthy extended combos, destructible floors and walls that continue combos (I might be wrong on the Walls part. I remember the paper doors in one stage for DOA4, but I don't recall if they performed the same action, or if they were just for decoration. Could anyone verify?), as well as the obvious inclusion of the VF characters and "side-step" mechanic.
EDIT: another thing worth noting about Tekken 6 is that the game introduced two (considerably notable) new characters to the series, Leo and Lars. There were other additions, but Lars and Leo share something peculiar with DOA4.
Leo
And Lars.
Yeah yeah, looks aren't quite enough to compare, but really - Leo and Eliot shared some techniques and had similar idle stances, and Lars is remarkably similar to Hayate with his signature dashing mechanic and rising aerial kicks.
DOA4, whether or not a few or many people on this site disliked it, was actually a good game, and was setting a trend in the actual "Developers of Fighting Games" community.