To me the mediguns are powerful in each way, but I find the medigun a little more useful and powerful then the others, let me explain. So basically the medigun allows invulnerability for 8 whole seconds. This allows the class to push through a point without dying, or maybe even take down sentry nests defending the last point. Howerver why I say that mediguns are powerful in each way is because the kritskrieg allows crits for 8 seconds, allowing soldiers or heavies or any class to kill almost every class in just 1-3 hits based on their weapons. The vaccinator is an underated weapon. It completely nerfs crits and headshots will only do 50 damage instead of the usual 150, and this can easily counter the kritskrieg, almost as good as the ubercharge, just that the vaccinator allows 4 resistance shields and the medigun is 1 ubercharge at a time. The quickfix is a good medigun for non-pocket medics. Basically its easy to bring teammates completed healed, but due to the low overheal its not meant to pocket a dps, but to however save time and spread the heals quickly. This is just my opinions of the 4 mediguns. I hope you agree with me if you disagree please I’d like to know your opinion. And do comment if you hope valve would add more mediguns with various push and defense strategies.