That's consistent with my not-that-well-informed take on the situation.
The thing is that our opinions are just opinions - I actually have no idea how much of an impact the 1% ATK has, but obviously with the stat latents you want to stack them on something that at least has above average of that stat to be amplified. RCV seems to scale the best out of them all, being 4% on top of being the highest weighted stat point for point out of the three. But depending on teams say, would you really need more rcv on a double gabe team that already has x4 RCV? I doubt it.
At the same time, 1% ATK against enemies that have millions of health at a time, I am not so sure about.
EDIT: Some random theoretical math I guess.
Let's say you have a mon with 2000 ATK, and you slap 5 +ATK Latents on it. That's +100 ATK, the equivalent of a +ATK Awakening. Let's also assume that said mon goes through an overall multiplier of x2000 at the time of final damage calculation after all the bells and whistles. You will get at most, if the enemy is weak to it, an additional 400K damage. I suppose this would be useful in some situations, but you'd have to know you're lacking that much damage, and I'm not actually sure how high multipliers go by the end of things, but I'm pretty sure things like ABastet can get that x2000 final mult. At the same time, if you're already hitting mods that high, do you
really need the additional damage at that point?
Meanwhile, HP. In a less extreme case, let's assume everyone in your party has 3000 HP base. Five HP Latents give +7.5% HP, so +225 HP per card, for a total of +1650 HP. Assuming no HP mods at all, this is what you get. an extra 1650 HP is easily enough to survive extra things you otherwise wouldn't, but this'd require having them on the whole party as opposed to the above case. Said team at hyper would probably have somewhere in the order of 26000+ HP instead of 24000+, and it's probably personal preference if they just feel safer with the HP.