Remember this is a team game. That is why we have map objectives, tanks, dps AND healers. The reason healers are hard to kill 1v1 is they don't dps (or at least very little) that's their defense and offense. If dps outpaces healing then why heal? Want to make so anyone can 1v1 a healer? Then why play a healer? Why have objectives? Hell what’s the point we can just have dps in battle royale type warzones seeing who can win a bloodbath. No strategy involved.
A team game has team tactics. Do the following to kill a healer
1) Mark the healer
2) Focus the healer
3) Interrupt/cc the healer (if you time these with just yours in tandem, you can easily stop 3 healing moves. It’s happened to me and I can do it as well. Trust me those heals were probably the most important ones.)
Personal Observations
1) Any good Mara/Sent and take a healer on 1v1 and win. I see lots of these in wz’s
2) A tracer/grav spammer that’s not interrupted can kill a healer.
3) The use of environment can kill a healer as well. Push/pulled and stunned into fire, acid, or off a bridge.
4) Having their healed target (if it’s more than 1v1) LoS’ed helps.