This is why you don't pay programmers by the line

if that the case just return false

Of course there's many programming languages and it's hard to explain what to return in each language. So in the description I read, that you had to return an integer array of {-1, -1, -1}, if v1 >= v2. But actually you need to return null. Because of that I got an error message:

• expected array was null.

When I looked at the kata test cases I understood my mistake.

Java

As much as I can tell, this kata is solvable in integers and solutions can avoid any problems with accuracy. This would mean that your rounding problem is not a kata issue. Generally it's a good idea to stick to smallest required unit (here seconds) and perform calculations using it. This way you avoid division and inaccuracies caused by it.

You can check by yourself: https://github.com/codewars/codewars.com/wiki/Troubleshooting-your-solution#how-can-i-see-which-input-causes-my-solution-to-fail

In one test, array1 == [] and array2 == None...

It is not that test you are failing.
Moreover, before posting an issue look at the top of the page to see how many people passed the kata (Python: 12135). When this number is high chances are your code is wrong somewhere.