I found the performance matrices for the T-129 very respectable comparing it with that of the Viper
from Pakistan's need for Military Support , special Tank and Personnel support the T-129 promises to be a great platform that can serve the needs for 15-18 years for Pakistani forces
However , we must also respect the performance for the Vipers and if we had option to induct
36-40 Vipers , and 80 T129 , would be a great addition.
The T129 does lacks in term of speed (Horizontal) and Payload capacity how much weapons it can take and unleash it on enemies. But not that the stuff it carries is not enough , there is enough firepower to take out 30-40 Tanks and few armored personnel carriers and 100-200 soldiers
If you imagine scenario , 200-800 Al Khalid Tanks , support in air by 100 T-129 that is a very respectable force , balanced and enough deterrence to discourage any misadventure