Ok, let's get some facts straight.
- you don't have Romanian TT-C, it's Soviet handgun with modern Russian export markings
- Super 12 are commecial reworks of Tokagypt but it's not the same. Latter is proper military contract.
- TT30 production started in 1931
- While Tokarev was a great firearm designer and came up with several distinctive and successful designs, his pistol design failed at trials and he was tasked to come up with better offer and quick. So he took German 7.63x25 round, Browning FN 1903 as base design, barrel lock from another Browning - m1911, came up with his own hammer assembly unit and refined all of this so primitive Soviet metallurgy and industry would be able to manufacture it, and manufacture cheap. This is how TT30 was born.
From 1930x point of view it was successful design, not without some minor flaws, it got the job done.