First the program is not a sim, but an exact calculation.
Second, you removed 4 each 2,3,4,6 and 3 fives from a single deck for the calculation so the composition is different from what you are doing. You probably wanted to remove the other 5 as well but if you do that then a hand of 10-5 is not possible. Your sample deals are for 10-5 vs 9 for some number full decks, probably single deck. The program calculates what to expect assuming perfect play for whatever composition is input. If you want to compute 10-5 vs 9 for a full single deck, input 1 deck and don't remove any cards at all.