psh, silly noobies! There's always a very work intensive way to figure out your simulation yourself!
Infantry spied is no doubt the easiest. Spy will make all inf 1hp. The only thing you need to do here is figure out the 1 round ramifications of a 1hp inf army vs. yours. Put in the new results and don't bother putting the inf back in into the simulation with the new numbers (assuming you win that part...). However, if you spy too far in advance, then you have to add back hp... which can only be done via calculating yourself. Best way, add up how much dmg you do to inf with your conc and just add up total hit points left. Hopefully if you bothered to do a spy... it's enough to ensure your getting some benefits from it and you'll likely kill all the inf in 1 round.
Vehicle and tanks are a bit harder as you have to calculate total leftover hp for these units and subtract the dmg based on chassis. By no means fun, but can be done fairly quickly with some practice.
Would be nice if they made a more indepth simulator. I've made a few on excel before. Hardest part to get right though is always the R4 and R5 units