Yes, many people say that there is nothing in common between combat in real life and combat in the virtual world. However, few people name specific differences, and if they do, they mention weapons and military tactics. But there are a number of important points besides the two already mentioned.

Readiness for combat at any moment and the ability to predict its start. That happens in any game: you just have to run it and wait for a while. In the real world, especially if the war has been going on for a long time, this is impossible. You never know how an operation will go and when the decisive minute will come. Besides, it is hard for a man to be on full alert all the time, both physically and psychologically. Therefore, it is not uncommon for soldiers to let their guard down. And you also have to add to this severe physical fatigue, hunger, and cold, which is not the case in the game.

The need to prepare many things in advance. This applies to real war. That is, in order to just open fire from a cannon in time, you need to have people on it at the right time, the cannon itself was ready for battle and that the military did not forget to give the order. Of course, this is much easier in the game.

The need to undergo training by the military. Also, combat encounters don’t happen as often in war as they do in games. Although, on the other hand, this is why the player can know more about combat tactics, what happens during an attack, and what to expect from the enemy. In real life, most of the battle is not the battle itself, but the preparation for it, various marches, maintenance of equipment, etc.
It is also worth noting and the fact that during the game the gamer himself is immortal – only the character can die. This allows a person to indefinitely pass the game, go from one battle to another. But in war it is more complicated: you can die at any time, including by accident. And experience does not always help to avoid that.

And in principle, such a level of training, as in the games, few people can achieve. At least this is due to the fact that the player can repeat the same actions in battle 25 times in one evening, and in reality a person is purely physically unable to perform it.