Agreed that MMA certainly forces you to work a broader range of skills, and I think that's an important aspect. I also think that the scenario training challenges you more emotionally/psychologically than MMA does; that is, if you are realistically replicating real-world, real-scary scenarios where Murphy is God and the violence brought forth by an attacker looks nothing like MMA, then that calls for a different state-of-mind, and also calls for an additional set of tools in the form of fear management, tactical appropriateness/decision-making, identification of pre-contact cues leading up to the attack, etc as well as other 'attributes' such as awareness that sport does not touch on to the same degree.
As I understand, DLO covers all this, and I was only thinking that Kali Tudo could actually be trained in the same way. People have long known through sports science/psychology that exercises and drills that yield the most benefit when it comes to the game have a direct correlation to the game (what they call sport-specificity). The strength exercise that Guro Crafty shows on Kali Tudo 2 is a great example of this.
In the end, I think it all boils down to your specific training goals and what you are training for. Having said all that, the two contexts overlap to be sure, and in my mind, Kali Tudo represents a kind of nexus between the sport world and the 'reality-based' world. I think Kali Tudo certainly could diverge off on a tangent toward scenario training, if one's goals lie in that direction. Or one could remain on the so-called sport path, but at the same time, abide by the criteria for DLO.
On the other hand, although my limited understanding of DLO is that it's weapon-oriented material, if one's goals lie directly in the self-preservation direction, DLO material is probably equally applicable vs unarmed attacks. DLO and KT are simply different pieces of the same puzzle sharing common links - I think I've clarified my own understanding of the differences between the two.