I've been using Mendy 83 for about 200 games and i packed Capdevila on the basic or world cup hero pick.
Well after near 30 games (most of them on FutChampions), i can tell that he is awesome, his pace feels lot better in game and his defending is abusive. I've played against lots of types of attackers, Mbappe, Haaland's build types, Cruyff...
I'm div 3 player near div 2 and he is far better than Mendy, i absolutely recommend him if you are doubting to buy this card.
Pace in game is way good, he catches Mbappe easy.
Defending, i felt secure with him, good int tackles.
Phisicality, he's strong, but i have to say that Mendy feels stronger, with anchor this changes.
Good passing, enough for a defender.
4 skill moves.
3 weak foot, it can be a problem in passing errors.
Agility and balance, well this is not a con but i think it could be better.