Yes, both teams have equal chances of winning the title. PSG team was in very bad form in the first round of Champions League. But now this team is very strong and can challenge any big team. PSG won in the knockout round against strong teams like Liverpool and Arsenal. And in the matches against these two opponents we saw PSG's dominance.
Inter Milan and PSG are strong and experienced in Champions League and there is not too considerable quality difference between them. In the final match, there is a chance of winning a very big title so that both teams will play very carefully and pay attention on many details. They know that their opponent would do the same and would be very ready to take advantage of any mistake for scoring a winning goal.
Although this final match is really hard in predicting a winner and also champion of Champions League this season, I am keen on Inter Milan as the champion.
I liked Donnarumma's performance in the previous matches because his good performance gave PSG the chance to go further to the Final and this is an advantage for PSG because they have a goalkeeper who is so calm and makes a lot of saves. The squad owned by Luis Enrique is still quite young so they are much faster and have quite good stamina.
Donnarumma is a very good goalkeeper and he has strong mentality in big matches throughout his career from AC Milan to PSG in clubs and Italy national team with a big title like Euro 2020 when he was their main goalkeeper. This season he has played so excellently and contributed considerable to PSG's success in Champions League. Now he will play his first Champions League final match with PSG while it is a second final match in their club history. Donnarumma will be very important for PSG in their defense system in a final match and it's especially helpful with his familiarity and understanding about many Italian players in Inter Milan squad.