Battle sim

I don't think any of those exist, at least none of that I've used.

You might just have to manually input the skills of the units. :l

Well, yes. The arctic silver fox battle simulator has custom lists, one of which I believe is used to test units against the most common T20 units (it's a numbered list on the drop down)

If you want to test versus no meta units however (IE the less popular units) you may have to enter the information yourself.

That being said, you can never test every variable. The meta is ever changing, and people in T19-20 tend to go nuts with random skills at times for their unique builds, so I'd recommend simply inputting them by hand (I know I have to do that to this day)

If you input it yourself once on a sim such as Arcticsilverfox, you can save it for future use. I find that the T20 list they have there is severely outdated.