How close are we talking?
I’m not calling you a liar OP, but in general I wish people perpetuating such broad claims would be more rigorous.
Unsloth does amazing work, however as far as I’m aware even they themselves do not publish head to head evals with the original unquantized models.
I have sympathy here because very few people and companies can afford to run the original models, let alone engineer rigorous evals.
However I felt compelled to comment because my experience does not match. For relatively simple usage the differences are hard to notice, but they become much more apparent in high complexity and long context tasks.