Maybe. It's just that my Chocobo is rank 20 and at level 70 his unbuffed Choco Cure only recovers about 5500 HP on average. If my health were already low enough for two auto-attacks (and maybe another special attack) to kill me within the span of a few seconds, I'm probably donion rings anyway. I'm sure there are a few instances where the Chocobo deciding between Surge and Cure could mean the difference between life and death, like against a single mob that's a few hits from death itself, but in a situation where I'm already at death's door and I'm being hit by multiple mobs I'd probably still have died even if the Chocobo spam-healed me. The only difference healing would make is how long it would it would take for the mobs to put me into a million dollar dream.
That's just personal experience though, YMMV. I do wish you could command it to stand in specific places or at least to heel because it eats a ridiculous number of AoEs from trying to stick to me like a herpe sore when in Healer Stance. My guess is SE made it follow you so that you're always in range of its spells, but it seems like it defeats the purpose if it has to keep stopping to heal itself instead of you because it isn't smart enough to get out of dodge.
