Di Maria is ridicolous quality, but he is not the same position or type of player as Dybala, despite being some similiarites.
Dybala lives for finding holes and gaps in final third and focuses more on shooting even if he can assist. The type of closed game like Sampdoria is what luxury central attackers like him were made for.
While Di Maria is a winger who is nonstop engine from wide and all over, way more assisting then being a goal threat. IMO he is a great signing. But one that I wont focus on too much because he is litterally here for one year only. We will be back in square one in 10 months, needing to replace him.
The bizzare thing too is talking about wanting to play 4-4-2 now (wants to sign Milik to hold up ball in 4-4-2, wtf?), litterally the formation Dybala was made for, when the initial idea was he was being kicked out because we are going to focus on 433? I really dont get what we are planning for at all.