Turtleboy, you've provided a great explanation of the duel!
I think crucially though, is that Lure (I believe) always has a TN of 12 regardless of whether or not the model using it has triggers associated with their Lure.
I also believe that the TN of an action is universal, regardless of the user. (I could be wrong, please don't hold me to this)
Also, the Rotten Belles have a trigger on , while other models may be missing one of their suits to begin with. I can illustrate that with Leap (0).
Necropunks have (0) Leap (Ca3 / TN10 ). Meaning Necropunks will need a 7 or higher of any suit to succeed at the leap action.
Sabertooth Cerberus on the other hand has (0) Leap (Ca5 / TN10 ) giving him a lower amount of cards to be successful with.