In brief, if an ion weapon is part of an attack pool that targets a speeder bike unit, does the effects apply to both bikes.

also, if the attack destroys one bike, but does not damage the other bike, is the survivor ionized?

Correct me if I am wrong, but are not tokens affecting a unit placed beside the unit leader?

It would always be affecting the unit then. Because they always have a leader.

Yeah, the ion token is assigned to and affects the unit , not an individual mini . And as long as any wounds were suffered by the unit, the ion token is assigned. So in your example, yes you would ionize it.

awesome, thanks guys