I think Dybala is a bigger risk taker when he dribbles. He's more of a threat and more willing to take defenders on 1v1, whereas the others are more likely to look to maintain possession or play somebody else in behind.
Last season he had 50 succesful dribbles to 41 unsuccessful ones in the league. For comparison Bernardo Silva had 49 to 39 (despite playing roughly 700 minutes more), David Silva had 31 to 15 (playing 300 minutes more), Eriksen had 18 successful and 18 unsuccessful dribbles (playing 600 minutes more), Mata had 10 successful dribbles to 7 unsuccesful dribbles (playing 900 minutes less than Dybala). And that was an underwhelming season for Dybala, the season before he completed 93 dribbles and had 36 unsuccesful ones.
As for maintaing possession, he's similar to Mata and Bernardo Silva, in that he roughly plays around the same amount of passes per game in a season. It's around 40 passes per game for them. Eriksen plays more than them, while he has the worst completion rate of the lot. David Silva obviously has the most passes per game. Last few seasons Dybala completed 89.3 percent, 87.3 percent and 85.4 percent of his passes, improving every single season. For comparison the last 3 seasons for the others: David Silva; 87.8, 88.9, 87.2, Bernardo Silva; 86.1, 87, 81.1, Eriksen; 81, 82.4, 80.2, Mata; 86, 86.7, 89.7.
Furthermore, knowing that, from open play he had 49 key passes last season and the season before that he had 53 key passes. Again for comparison: David Silva; 73 and 61, Bernardo Silva; 69 and 57 (choose his final season for Monace here), Eriksen; 67 and 91 (playing almost 900 minutes more though), Mata (choose 14/15 and 15/16, since he didn't reach 2000 minutes the following seasons); 52 and 48.
As far as possession loss goes, he had 71 unsuccessful touches last season and was dispossessed 43 times, the season before it was 77 and 65. For comparison again: David Silva; 28/30 and 32/29, Bernardo Silva; 44/37 and 72/74 (choose his final season at Monaco again due to his minutes in his first season for City), Eriksen; 61/29 and 75/72, Mata (again, his first 2 seasons for United here, since he played more minutes); 32/54 and 26/40.
I think it's fair to say that the others play more final balls or somebody in behind, as you put it, especially Eriksen, at the same time, Eriksen takes a lot more risks with his passing, while Dybala doesn't need to shy away from the comparison in terms of keeping possession. Since his role is slightly different, it's not really surprising that he plays fewer key passes, gets dispossessed more and has more unsuccessful touches. Then again Bernardo Silva had similar numbers at Monaco and Eriksen, especially the season before last, as well. In terms of success rate for dribbles, David Silva and Bernardo Silva come close to him, while they attempt significantly fewer dribbles under Guardiola.
In conclusion, I think your assessment is fair, except for the maintaining possession part.