Rieekan, for 30 points, affects squadrons with names (uniques). If they die but haven't activated, they can still activate and roll their dice.
Vader, for 36 points, doesn't affect squadrons with tokens. Why? If you want to spend a token to activate Vader's ability, you're still paying the hefty cost of potential survivability loss. Yes, there are occasions where there isn't much risks involved.
To make it short: Would Vader be completely OP if squadrons with tokens could also use his ability? Or would that simply put him on the same level as Rieekan?