MMA is better for fighting. Some people erroneously believe that in a no rules situation, a krav maga practitioner will beat an MMA fighter in a 1v1 unarmed fight to the death, because the krav maga guy knows groin kicks and eye gouges. In reality the MMA fighter would almost certainly dominate such a fight, as they spar much more often and with greater intensity than most krav maga practitioners. As well, in a 1v1 fight, position is the single most effective predictor of victory, which means wrestling (which krav maga people prefer to avoid) is a highly important skill. Imagine yourself trying to gouge someone’s eye from beneath them vs. from on top of them — which position would you rather be in?
As well, dangerous krav maga techniques are very hard to spar with, and any martial artist knows that drilling without sparring is like coding without debugging. Krav maga is better for self-defense. Some people erroneously believe that being better equipped to fight 1v1 means being better equipped to defend yourself against an assault. This is not true — A big component of self-defense are the non-combative skills: Seeing a threat before it happens, verbal de-escalation in a conflict, and running away as soon as possible. Krav maga hones these soft skills, as well as places an emphasis on constantly scanning for multiple attackers.