a reference RTX 3060 Ti w/ 38 SM and higher clock speed beating 48 SM lower clocked RTX A4000. Both have similar TFLOPS (~18TF) and exactly the same GDDR6-14000 memory, so 448 GB/s bandwidth.
OC'd A4000 gets an additional +10% on core clock and +14% on memory (512GB/s). A4000 has the same Ampere architecture and in terms of its silicon and size, it's basically a 3070 Ti (48 SM) paired with 16GB VRAM. You're essentially seeing an RTX 3070 Ti silicon getting beat by GPUs (3060 Ti, 3070) with fewer SMs running at higher clk speeds.
52fps vs 57fps. One is much closer to 60fps than the other. So I'd say that's a "noticeably different" performance.
Of course, not every game sees the same advantage as it depends from game to game, engine to engine like we've been seeing with XSX and PS5. Here both stock 3060 Ti and A4000 are like-for-like as their TFLOPS would suggest:
There are 3060 Tis with even bigger coolers hitting even higher clock speeds like MSI's 3 slot Gaming X Trio which can match and sometimes even exceed RTX 3070 Founders Edition. IIRC, @Werewolfgrandma
probably has the Gaming X Trio model, correct me if I'm wrong. His 3060 Ti pretty much matches my 3070 FE at stock in Death Stranding
So as you can see it's not speculation, you just choose to ignore facts.