Should I prefer higher IV totals or higher max CP?

I have 2 Grimers with the following stats:

• 89% (15/13/12) with a max possible CP of 2677
• 93% (13/15/14) with a max possible CP of 2676

I have read that the CP formula values Attack more than Defense or Stamina, this is why the lower percentage Grimer has an overall higher CP. Question is, should I also value Attack and therefore CP more? Which Grimer is better?

NOTE: I am not asking about CURRENT CP vs IVs like this question, I am asking about MAXIMUM CP at level 40 versus IV%.

It depends on your use of the Pokemon.

For example, a Pokemon with a higher defense takes less damage, and a higher stamina means they lose less CP when defending a gym. A higher attack means they deal more damage, (obviously).

So it's up to you what you prefer more; an attacker or a defender, or you can simply keep both - one for attacking the gym, and the other for defending it once you take it down.