Panther can't really be kited by anything due to its speed and vet1.
It can be zoned by ATGs and infantry, but it can't be kited by any allied vehicle.
IMO it can be kited easily, especially by Jacksons (but even by fireflies and su85s) and lured into at guns/mines/zooks.
And its not supposed to outrange, its supposed to outlast.
In plain firefight, it beats all allied TDs without contest.
but in real game scenario when you and your opponent are on similar level, it won't outlast concentrated fire of cheaper units with longer range. This idea is the crux of the problem. Range is far superior to extra armour as it gives you more tactical possibilities. It wouldn't be such a great problem if the cost was simlar (jackson priced similarly to panther; range/repairs/speed on one side and extra armour and a bit of anty infantry potency on another) but panther is so much more expensive.
Also, you seem to be under the impression that churchill is actually good against vehicles - its not, its worse then cromwell as despite it has durability and same gun, it doesn't have speed to flank or finish of anything. Its a damage sponge, not damage dealer.
Churchill will sponge damage, kill infantry, often at weapons and penetrate mediums. It is usually enough for the rest of UKF units to finish what is left. There are other tanks such as KV and other heavies which panther can't reliably penetrate in contrast to other cheaper TDs.