Predator, you act like a 2-weeker sometimes and your info is way off on others.
What do you think "exotic" means? Rare. Scarce. The weapons that were rarely used and would be over-powering. As I said the perk system was implemented (from HTC's own words, even on the main webpage) to limit the rare weapons to prevent a side-effect of unbalancing the gameplay.
Tilt: Locomotives could be taken out with .50cal even, or HE 20mm rounds, and a 37mm round? Much stronger. I have no doubts. It's not rolled armored steel. It's pig iron. Okay, not really, but still! It's brittle. It's under pressure. All you had to do was crack it or pop the rivets enough for the boiler to blow. It was quite common.
As for 27 FWs, well on the one hand if you WERE to find them, they would be over the heart of Berlin, now? Then again, you have to question the legitimacy of any Soviet kill claims, as they were badgered and co-erced into exaggerating claims so that the propoganda machine could feed Communist lies to appease the masses. The Soviets have by far the worst morals in regards to reporting, recording, and checking on actual kills. It doesn't matter to them, it was just something to make them look good. Even as early as Barbarossa, Soviet pilots were caught (by Germans!) flying around when they thought they were alone, performing acrobatics and firing their guns into the air so that when they landed they could tell the comrades that badgered them before they were even out of the cockpit, "I fought off 20 of them!" and so forth. The level corruption continues to this day, being ingrained from a young age to appease the political machine unless you go missing in the night. You find similarly exaggerated kill numbers (fabrications) all the way up to Korea and Vietnam. So while maybe there were 27 FWs to shoot down, I would seriously doubt that many were engaged by Soviets just based on experts who have researched Soviet claims and the corresponding facts.