Answer:
That would depend on how the toddlers have seen others handle conflict. Also, how they've been led through conflicts with siblings, or other children in the past. Some children are taught early about "sharing" and "taking turns" and will try to insist on fair resolutions. Others grab and cry and don't care about what the other child is feeling.
Having said all that, children with conditions like ADD cannot focus on conflict resolution long enough to employ productive tactics. All they know at that moment is that they don't have what they want. This is not their fault. Sometimes irrational behavior can be explained with that. Unfortunately, ADD is not usually diagnosed until later so it can be hard to spot in a toddler. A tired or hungry toddler will have all the same symptoms.