both have their pros and cons
advantage of voodoo is that there is some potential for a secondary strike role
The F-106 would also have strike “potential”. The F-106 could have likely been adopted to a strike role fairly easily. The internal bay could have been for a nuclear strike role like the original F-105 concept, and for a conventional strike role as well with internal bay and hard points.
The F-106 would have made a great interceptor for a many of countries, and perhaps an under rated “fighter” as well.
The Lightning was sold to Saudi and Kuwait with a limited ground attack capability- but its lack of range was always an issue.