I believe tactics matter greatly, but I won't call this "proof"...
This was evenly matched Q 4141 for me, against 3n 2mc 2aml/r 3st, 15% possession for me. I used only condition bonus whole match.
Here's the thing- we made the first goal at 38', and things looked pretty even from the start. Shortly after the half I made one (only 1) tactical change mentality change from defensive to normal. That was like hitting a switch and you can see 6 goals flooded in just after that change. 5 those 6 recorded assists. Forced counterattacking was never on, and other tactics didn't change.
To those who say the results are predetermined, this result would be ridiculous. Engine decided the winner, but held back on the goals until the time was right? Ok...