Problem with .pbix and .pbit files

Hi,

I need some help with .pbix / .pbit files.

I know their difference (have read a lot of about them from there and some else sites also) but I think they don't work as they should to.

There are some examples about it:
.pbix:

.pbit:

The only difference I see between them:

As it should be, I know. But I can't understand why there is still everything what .pbix has?? There is all data etc. I can't see anything else differencies than the size of files. (No matter if I export or save template).

So, does anyone know what's wrong with it? Or am I just thinking I know their difference but the truth is I don't.

Thank you in advance.