None of them have a large chakra reserve or effective techs that can wipe out a mass number of people in an instant, like deidora's c3, c4, c0 or nagato's demonic statue of the outerpath
Dude.... what the hell. Samurai are not complete fodder, they have energy blades and energy projections, armor and the sort. They are probably as strong as an average anbu member.
No way in hell can these four take on 10,000, not even 1,000. 100 more likely.
I think it depends on where they are cause if they where fighting in the desert they would win in a couple of minutes but if they where in the land of iron it would take them alot longer to win and yes no matter where they are the ninja team would beat the 10000 samurai at least thats what I think I could be wrong
it's been stated irl that entomological warfare is very VERY dangerous indeed and has been proven to kill hundreds of thousands of people...so my vote goes to gaara and shino wiping out the battlefield by themselves lolx with shika and neji there for moral support xD