Well, interesting losses.
Only 2 Büffel were given to Ukraine to recover lost Leopard 2A6.
Only 6 Leopard2R were manufactured, and all 6 were donated to Ukraine.
So in that column Ukraine lost 50% of the Büffels it has as well as 50% of the 2Rs Ukraine has (and that have ever been produced).

Losses :

--- #tanks --- RED
2x #LEO2A6

--- #track_maneuver --- YELLOW
2x #Bradley

--- #wheel_maneuver --- GREEN
1x #Maxx
1x #pickup

--- #unknown_vehicle --- BLUE
1x #unknown_vehicle

--- #special --- P