UngeheuerLich
Legend
With the same modifier the one with DS has the higher chance to beat someone with initiative 7 to 15, and the one with ii has the better chance to beat someone with higher or lower initiative than that. 1-6 and 16-20. So at first glance it looks like II is better. But chances to roll 6 or lower are about 10% and chances to roll 16 or higher is about 50% for both. It is about the critical balance point: If II only was a +3 bonus, DS would be better against numbers between 5 and 17 and If II was +5 it would be strictly better against all rolls exept 11 where they are even...
