If you could prove that Jotenheim is somehow special when it comes to the Bifrost, you'd have a point, as it stands, anyone with a brain can understand the conversation between Volstagg and Heimdall:
Heimdall: Be warned, I shall uphold my sacred oath to protect this realm as its gatekeeper. If your return threatens the safety of Asgard, my gate will remain shut and you will be left to perish on the cold waste of Jotunheim.
Volstagg: Couldn't you just keep the bridge open for us?
Heimdall: Keeping the bridge open would unleash the full power of the Bifrost and destroy Jotunheim, with you on it.
Moving on.