Kisame would definitely have a chance against EMS Madara, he might even have an edge. A huge amount of his techniques are based on his abilities to absorb chakra (the giant shark bullet thing, samehada, and others) which would be great counters to all of Madara's ninjutsu. He knows Itachi, so he understands the workings of Sharingan genjutsu, so he would definitely know to avoid them. And his water techniques are great counters to Madara's fire techinques. So yes, he has a great chance of winning against EMS Madara. Now, against Rinnegan Madara and Edo Madara (who also has Rinnegan + Mokuton), he would not win most likely, because one of the Paths of the Rinnegan is chakra absorbsion, so that would counter Kisame's. Plus, in the case of Edo Madara, his Mokuton would counter Kisame's water techniques.
This is my opinion. It depends on which version he's fighting against, but against EMS, he could very well win. I actually say, as far as we have seen, Kisame would win the majority of times.
This is my opinion. It depends on which version he's fighting against, but against EMS, he could very well win. I actually say, as far as we have seen, Kisame would win the majority of times.