nope, it is only fair.
Fair based on what exactly?
Because based on rate of fire of all TDs, its very unfair.
Based on RoF vet of all TDs, its very unfair.
Based on armor of all TDs, its very unfair.
i watched many top games, including low level plays from my games
panthers hardly survive till vet3, whereas allies TD reach vet3 much earlier and last longer.
something smells wrong.
Cheaper units vet faster then expensive one.
That being said, I have watched many top games, including mid level games of my own and I have seen multiple vet3 panthers, where allied TDs were just zoned by ATGs and killed by fast flanks.
That something that smells wrong for you, its you.