Bruce is the product of timing and marketing.
He's the greatest fighter that no one ever saw in a fight
There are plenty of first hand accounts of how good Lee was. People didn't have cameras everywhere including their pocket in the 70s
Anyway, impossible comparison. There is zero way to tell how good Lee would be in 2023 with the advances in fighting (which he directly helped advance, he's MMA's ancestor), nutrition, medicine and training.
Also, modern MMA is a different world than tournament martial arts or street fighting, where Lee got it in.