Well if we had a regular Sherman...you know...the tiger was FEARED on the battlefield. It used to be in AH back in the TT days. When someone upped a Tiger you'd hear screaming over VOX, because it dominated the battlefield there, and it was just like world war II, you needed 4-5 tanks to kill it (usually). Then the Sherman came along with it's 5 perk price and it's the new king...
I remember when Panzers had a hell of a time killing a Tiger from practically any range.
Up the Sherman as in this game it seems better than the tiger. At least in my POV...I've taken one hits from Panzers in Shermans and Tigers...should not be the same..the Tiger should have lasted a lot more hits.
There's a scenario running currently. It's Tunisia. We're seeing a force of Tigers and Panzers against a force of Sherman Fireflies and Panzers. Let me tell you, the Tigers dominate the Shermans in this environment. Everyone on both sides who has been involved in this large-scale desert tank battle can tell you that.
The crucial difference between what we're seeing in cartoon Tunisia, and what you're seeing in the MAs, is that in Tunisia we're fighting across very expansive desert terrain, where the shots are taken at much longer average ranges. At long ranges, say 2500-5000 yards, the Tiger's gun is able to breach the Sherman's armor a lot more readily than the Firefly's gun is able to breach the Tiger's armor. Even at closer ranges a Tiger has a better chance of withstanding a hit from the Sherman than the Sherman has of withstanding the Tiger hit.
In the MAs, people tend to be using Tigers and Shermans in wooded and hilly terrain where the average shots are more like 400-1600 yards or so. At these ranges the Shermans have better chances against Tigers than at much longer ranges, but the Tigers still kill the Sherman more often than vice versa, even at these ranges. Just look at the scores page and do the numbers - the Tiger has a greater than 1.0 k/d ratio against the Shermans in the LW arenas.
Bottom line is that the Tigers are definitely worth more perks than the Shermans. I would agree, however, that the difference in costs is currently too great. The Tiger perk price could probably stand to be dropped by five points, and raise the Sherman perk price by five points, and it would probably be about right.
If the T34/85's turret weren't made out of paper mache, I'd say its price could stand to go up a couple points too. Even with its soft turret, IMHO the T34/85 is still the most useful tank in the game for most situations.
ps: Just as an anecdote, in frame 2 of Tunisia two of my tank deaths were when I'd managed to get really close to the Tigers, much closer than usual, and hit Tigers from around 800-1000 yards and did no damage, and the Tigers subsequently killed me. In one of those deaths, I'd actually hit the Tiger
twice from around 900 yards and did nothing. Arg!