1. No he hasn't. Impact of Pogba and the position he has played, he always meant way more to our overall play than Dybala did. If Dybala isn't scoring goals he's not doing much else. I remember many games where everything revolved around Pogba and he elevated the whole team. Dybala other than his first season not so much although there were moments. I know everyone's mad for the way he left but Pogba was a much better overall player than Dybala.
If you want a specific example, watch the two games against Monaco in the semifinal of 2017 where Dybala did not score but was excellent overall.
2. Maybe he didn't win it by himself (a bit ridiculous to expect that from a btb midfielder but ok), but his performance vs Bayern away was perfection for example. And that was a much better team and matchup than Barca that year. Also games against Dortmund before his injury, both vs City in gs, RM away in 14/15, both vs Bayern 15/16 etc. All those games he was either the best or one of the best on the team. Meanwhile Dybala has that one straw to hold on to and the fact most of our best performances in CL over the years came when he wasn't playing (Bayern, RM 1-3, Atletico 3-0)
Man City 2015/16 was also an average team that barely made the CL that season
You have a point regarding Real 2015 and Bayern 2016, his performances in those games were very good but not legendary.
Dybala's performance against Barca with MSN in 2017 was legendary.
He was also excellent in the semifinal against Monaco
Dybala also scored the winning goal against Tottenham
He also scored against Bayern at home in 2016
He scored an amazing goal against Atletico a few months ago that helped us top the group
3. Pogba left Juve when he was 23 years old. Dybala is 26, going on 27 and people are still talking about him as some wonder who still needs to develop, whose time is coming. Just if his teammates were less shit.

People still talk about Pogba like a young player, and he's older than Dybala!
