Some editors can author to all mentioned media, like Nero Video and PowerDirector.
Premiere Elements can not.

And a remark in manual of my Panasonic BD player made me wonder.
You have a SDHC slot and usb ports as well, so you can play discs on those formats too.
But manual states that you cannot simply drag and drop file structures from other media - navigation menu or chapter will not work.

So wonder what is different, thinking this is only files.

Anybody know or have a source to read up on this?