I don't understand this point, but assuming it's still related to the DPS issue, I'll try to explain. Try shredding an enemy to death with nothing but the crossbow. Even if the enemy's health is only half full, like after killing your careless patient or scavenging for kills after taking some damage along the way, it's still a painfully slow and inferior choice to any syringe gun. The best case would be that the enemy is under 30-40 health, which a single bolt of the crossbow can take care of, but also which a syringe gun can take care of just as fast anyway with 3-7 well aimed syringes. Assuming the enemy is pressured by his low health, it may break his movement pattern, making him a predictable target (such as backpedalling in a straight line), and making your syringes easier to land on him. If he doesn't, he'll just resort to his old style of movement, which you should be observing and adapting your aim to anyway, and nothing is lost.>Point 1a
Sometimes you win some, sometimes you lose some. Of course, you own awareness is extremely helpful, not just building the habit of looking behind yourself, but upwards too. But it's this sense of awareness that you cannot remind your patient of constantly or consistently. And there are times when you just cannot rely on your patient to do everything for you, especially if he's busy dealing with his own enemies, which I explained earlier. I already explained Point 5, if the enemy is grounded, it wouldn't make a difference to his movement or halt him and put you at an advantage.
Right now, I'm trying to justify all three syringe guns and why they are better self-defense weapons and all-around purposefully better choices for a more reserved playstyle than the crossbow, and hopefully shed some light on the stock syringe gun. I'll talk about the Blut and maybe argue why I don't use it at another time, or if it comes up.