unbelievably gained leverage

[navi tasan]

1) Unbelievably, they have gained leverage.
2) They have unbelievably gained leverage.
3) They have gained leverage unbelievably.


I think in #1 the fact that they gained leverage is unbelievable, and in #3 the amount of leverage is unbelievable (they have gained leverage in an unbelievable manner), but what about #2? I think it means the same as #1. Is that correct?

I heard a sentence similar to #2 here:

at 2:53

 

[jutfrank]

All three are the same in that unbelievably modifies the whole sentence and the position is irrelevant. You can hear this in the way she she reiterates her point by rephrasing the sentence with the modifying adverb:

Iran has unbelivably gained leverage. Unbelievably, they have leverage.

In both of her sentences, what is unbelievable is the fact that Iran has gained leverage.

 

[emsr2d2]

There's a chance that #3 could be read as "They have gained leverage in an unbelievable way". This could be avoided by putting a comma after "leverage".