Kenshin would get murdered by Wolverine.
As Kenshin, he is not as fast or strong or agile as Hitokiri Battousai. In this state, he doesn't have what it takes to take on Wolverine. Wolverine would just slice through his sword and then chop Kenshin up into tiny little cubes and feed them to dogs.
As Hitokiri Battousai he is faster and stronger and more agile, but its not like its on par with Wolverine. Wolverine is faster, much stronger and more agile. As the Battousai he would be chopped into little cubes as well.
The only thing Kenshin might be able to do is pull of his ultimate technique, the AmaKakeru Ryu No Hirameki. But since this is a bloodluted Kenshin, he is the Battousai, and he'll end up dying trying to pull off his ultimate technique.
I also think that Jubei would murder Kenshin. He is on par with all of Kenshin's skills. Its true that Kenshin beat Ryjuta, but Jubei is far more skilled than Ryjuta.