Are they over optimistic predictions?
Digibyte has lots of usages in real life.
It means that the project has big community behind, high demand on the coin surely; so when the growth period of crypto market comes, Digibyte will jump into the ride (raising one). I have no doubt about this theory.
I've seen other predictions for $DGB to get to $9. Considering Ripple has to nearly $4 and has a much larger circulation its not unfeasible. Who knows what can happen when all the developments that Digitbyte come and out a lot of more people get into Crytpo.