So we'll forget about Lyudmila, justified or not, and use Matthias Hetzenauer(345) or Heinz Thorvald (300). Perhaps Sepp Allerberger(257),Gefreiter Meyer(180) or Oleh Dir (120). All good German snipers. Scores weren't my point. All snipers dealt with environment. Each, if he lived , used it to his advantage. As good as Hatcock was in hs environment the others , German in the case of WW2 , were as good in theirs. They lived. Would Hatcock have survived on the fields of Flanders or the rubble of Stalingrad ? Or our good Germans the jungles of Asia? We'll never know . There is no best.
I read the book, about Carlos Hathcock, I think it was titled "Marine Sniper" and his accomplishments were spectacular. I recall one incident in which he and his spotter just about wiped out an NVA company. (His spotter was using an M14 and may have got more than Hathcock.) I don't think any of these were counted as confirmed kills.
Shooting Russians in the rubble of a burned out city is different than stalking individuals in the jungle. Who knows? I do know I wouldn't want any of them after me.