You don't bother with fact that there is no such thing as 65cm anti-sub torpedo in reality ? :-) Real 65-76 is dedicated anti-ship weapon. If we have non-existing 65cm anti-sub torpedo in the game and that's ok for most people (?) then maybe let's make even better 100kts 50nm active/passive/wire-guided/wake-homing/IR stealth torpedo for Akulas, for sure they would make most of their kills with it ;-))))
I think real challenge is to achieve success with realistic weapons, in other case it becomes rather sci-fi (like X-Wing) or alternate-history game, not simulator
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And the Russian ASW missiles are very good, so I think that even without universal 65cm torpedo they have advantage in weapons - longer range and short reaction time with missiles, quite good UGST torpedos at closer ranges, and those awesome 65cm wake-homers against surface ships.
Next thing I'll make for Luftwolf's mod will be a long-range mode for 65cm torpedo, it can go to 54nm (!!!) at still not-bad speed of 40kts. It would be even better anti-ship weapon then, think what could you do with 54nm 40kts wake-soming torpedo :-) Of course "short-range" 27nm/50kts mode will be still available.