Action/Adventure General

[dojikyo]

First and foremonest, try both demos.

If for whatever reason you can't/won't try the demos (bandwidth caps and what not), I guess it depends a lot on what you're looking for.

NGS2:

-Combat is brutal.  Lopping off frame limbs and  performing obliteration attacks.

-Superior frame rate (~60fps for NGS2 compared to ~30fps for Bayonetta), more fluid in execution and motion

-Has online coop missions for added replayability/ the ability to play with friends

Bayonetta

-More fluid in design due to dodge offsets. ie. You can dodge in the middle of a string and continue the string where you left off after dodging.

-More inventory management, ie. you can select two accessories, weapons assigned to arms/legs

[minkbikini]

there's demos of both in the PSN store...

[xMochii-]

I say go for Bayonetta.

I never played Ninja Gaiden before so...yeah. :c

[Ichilicious]

It depends if you want a challenge or something fun. For a challenge, Ninja Gaiden 2. For something casual, Bayonette. 

[the_ed_85]

I would go bayonetta. Ninja Gaiden is good, but not as good as bayonetta

[mmmig]

I have 100% completion on both and highly recommend both