So must've been either a very bad RNG streak or observer bias.
Anyhow the KV-1 is meant to be tanky, it's pretty much its sole purpose.
If you need heavy AT tank, Tiger isn't really best deal.
The Tiger's DPM is one of the highest in the game, which easily compensates its somewhat lower penetration. Combined with great effective accuracy (due to low scatter), good mobility and the vet 2 range increase, it's easily Ostheer's best AT tool besides the Elefant. A vet 3 Tiger (range + ROF) can easily beat any other tank, and it's a lot more cost effective than the Panther because it also decimates infantry.