I lived in Bangkok and saw 4 motorcycle accidents or their immediate aftermath. Even in perpetually jammed third world megacity traffic, the motorcyclist always loses to the other vehicle, in several of those cases almost certainly fatally.

I guess this depends on whether you're emphasizing deadliness or likelihood.

I live in Thailand, and I can assure you that while scooters dominating city streets increases awareness by car drivers, it doesn't make accidents less likely.

Most accidents worldwide happen on low-speed streets, not highways. On highways, the speeds are higher, so the rare accidents that occur are more damaging, but the opportunities for accidents are also much, MUCH lower. (No/few turns, no/few stops, similar speed levels, better visibility, etc.)