Demeteorizer uses "meteor bundle" internally. What it does differently is generate a package.json file from all of those bundled dependencies. It fixes the case where your development platform is different than your production platform. The native modules need to be recompiled. Using a package.json and npm install makes that really easy. Checkout the big red text in the Meteor docs on deploying[1].

[1] http://docs.meteor.com/#deploying