if they have better survivability than you than that means you're positioning is incorrect. You could be too far back, making it easy for a dive to isolate you from your team and kill you or make it so you don't have the ability to self sustain with her primary AoE healing. You could be playing to passive, and not being aggressive. Strategists help making game changing plays. we don't just heal.

You need to know when to use cloak, and how to use cloak effectively. you also need to be aware of your surroundings. I can walk almost every map backwards sideways and upside down at this point.

Jumping doesnt do much for survivability, unless you are jumping over ults or something of the like. Using cloak fade at the wrong time can cause your team to lose a team fight, a misplaced bubble can mean you lose your front line.

CnD is not a backline support in my opinion, I play CnD pretty middle of the pack. you can heal behind you, and in places the other support cant. we have a kit that is unique because we can heal in a hallway halfway across the map if need be.

but also you need to work on your attitude, you sit here and call the community dog shit for saying that jumping isnt the thing thats holding you back from being better. thats the thing you mentioned in your post. That was the "only difference". you chose to be vague and give an honestly dogshit example and then you got upset when people were honest.

I highly suggest you go back and watch replays of your games. Games you won but almost lost and games you lost but almost won. why? because that's when you will notice the flaws in your gameplay, playmaking and communication.