Funny how you ignore T-34/76 and panther vet 2 stats, but game is not a vacuum so I'm not going to get sucked into this debate.
What makes the comet worse vs Okw p4 for example compares to panther vs meds is the crap vet.
Comet problem is 10mins after you keep it alive you're going to be clubbed by vet panthers and vet p4 that cleans up Tommies for breakfast.
All axis have to do vs a comet is sit back and vet your tanks, then you win because comet vet is laughable compared to other tanks in its price range. But you are still sticking to your silly argument the tank throwing grenades at vet 3 is somehow better than a straight up reload buff like panther or Pershing gets.
Funny how you ignore the cost of T34/76 which allows one to have around 3 of them if the opponent has a single Panther and which can kill the Panther.
If you bothered to read before jumping in you could actually see the vet comparison in post 38.
Unlocks the 'Blitzkrieg' ability
+10% armour , +40% weapon rotation speed
-30% reload, +20% rotation speed, +10% ac/de-celeration
Fires White Phosphorus instead of normal smoke
+35% Weapon rotation speed , +30% accuracy
+30% Speed, Crew will attack nearby targets with their grenades by default, +20% Acceleration
Vet 1 bonus point goes to Comet since it already has the "warspeed" ability
Vet 2 bonus Point goes to Comet since it has already better armor at vet 2 while facing weaker TD and gain 130% accuracy
Vet 3 point goes to Panther for the reload but Comet does get better mobility.
If one adds the 45 vision, smoke/WP smoke, and hammer tracking one will get a better picture.
As for your grenade comment, grenades and WP smoke allows Comet to attack ATG something that Panther has much harder time doing.
You are entitled to believe thou that comet's "vet is laughable compared to other tanks in its price range."