Incorrect.
Forced Movement and Teleportation restrict all opportunity actions, and get around Polearm Gamble and other triggered opportunity attacks. If the power in question forbids -all- opportunity attacks, they get around things like that. If they forbid all opportunity actions, they trump even more things. They don't, however, stop triggered non-actions like Booming Blade, or Dire Radiance, because these are not actions, nor are they opportunity actions.
Doesn't that come down to which more is more general and which is more specific?
Forced movement's rules are general referring to forced movement while the rules governing a specific power are specific and govern a special set of circumstances and how they interact with this power. So doesn't a power saying I get to attack you if you move closer to me override the general ruling that teleports or forced movement don't trigger Opportunity actions. Or do we not let it override since it doesn't not specifically say that it overrides the general ruling for those movement types.
Opportunity attacks and shift each say what happens when they collide due to them being both general, but when a specific is in play, doesn't it ignore both of those generals when it conflicts and go with it's own rules.
This is a problem of exception based systems really, I like 4th edition but these types of issues crop up because of how it's done, the alternative is worse though.