Ninja Ressurection is ok if you're just looking for ultra violence for basically no reason with a boob thrown in every once and a while, but otherwise there's better movies to see.
No to mention the fact that none of the Ninja Ressurections make any sense when put next to one another, much less when put against the original Ninja Scroll. It really was a marketing ploy, because there's no other explanation for them being so losely strung together, especially since the Ressurection series was the supposed 'sequel' to Ninja Scroll. The similarities begin, and end, with Jubei. (who was based on a historical figure, by the way)
Everyone is not the same as you.
Get over it.
And lighten up.