Turkish engineering is miles ahead of the Russian when it comes to advance armored designs. However like any NATO country, Turkish stuff isn't cheap.
TOS-1A has pathetic armor and it can be destroyed by an RPG.
Sry,but it´isn´t.
TOS-1A and the 2S19 are all Systems from the Cold War.
T-90 is a present @90´s and it´s over 20 Years old.
Russia is too developing a new Systems like Turkey.
Examples:
Armata Russian main battle tank technical data sheet specifications information description pictures*-*Army Recognition*-*Army Recognition
Black Eagle :
Type 95 Object 195 :
Russia is not stupid.