Who can defend and attack best,a shaolin kungfu master OR a taekwando or

[PinkyAwan]

shotokan or kyukushin black belt mast?

Its black belt master.in the end.

[Sev]

Depends how piss drunk they are at the moment.

EDIT: 2 people clearly don't have a sense of humor

[john]

That would depend more on the person than the style. But let's assume they are all exactly identical apart from what style they train. In that case I'd give an edge to the kyokushin karate master, because of the styles you mentioned, kyokushin tends to place the biggest emphasis on aggressive sparring.

In terms of the techniques these styles focus on, I don't think there would be a massive difference. Movement patterns will be somewhat different, there will be a bigger focus on kicks in taekwondo than in shotokan etc, but in the end they are all traditional striking arts with similar focus, so the deciding factor should be in the training methods.

[Rikashiku]

They all suffer a heart attack due to the final levels being in their 70's.

It all depends on how good they are as martial artist and not on their style. Its not about the hardness of the training but the effectiveness of the training and how they use what they have learned.

[Matt]

A Brazilian Ju Jitsu black belt would kick either of their asses.

[JackG]

It would be the one who adapts the quickest in the fight. Bruce Lee taught this in the Tao of Jeet Kune Do. You see this in MMA. A fighter may switch from striking to submission because the other fighter may be a better striker. Example: Jones vs. Machida UFC 140. It's all about adapting.