How FC2 holds up 10 years later. FC5 has its own attention to details that FC2 doesn't have, this comparison doesn't mean FC5 has nothing to show.
Both games run under a different version of the Dunia engine (Ubisoftmodified CryEngine).
If you don't know which game is which, Far Cry 5 always cuts before Far Cry 2, clips fade in when it's just another example from the same game.
Recorded on PC, ultra settings.
What's missing:
FC2: Rain, no dynamic weather in FC5    • Rain in Far Cry 2  
FC5: Fire through walls with armor piercing ammo    • Far Cry 5  How To Get Armor Piercing...  
FC5: Large ammo boxes explode    • Hey Crowbcat:  
FC2: Golden AK47 variant, less prone to corrosion    • Far Cry 2 Gold AK47  
Song samples from Delta Force Black Hawk Down OST:    • Delta Force  Black Hawk Down  Origi...   ;    • Delta Force  Black Hawk Down  Origi...   ;    • Delta Force  Black Hawk Down  Origi...