It's hard to say . The odds of getting a single event 9 darter (environmental conditions aside) are pretty much static, yet it doesn't happen very often , it was and remains a pretty rare occurrence.
Whilst undoubtedly incredibly hard , if the reds split a certain way in snooker ie room between the balls and off the cushions largely, black not blocked to bottom pockets then pretty much any player in the world's top couple of hundred has a fair chance of a 147.
To my mind Ronnie O'Sullivan devalued the feat by knocking on in in just over 5 minutes , the utterly mad b*stard. I won't live to see that beaten and I'm not sure the human race will either
Its why they don't pay much for it any more (that and less people watching than the 80s heyday) , too easy for the modern player.
Instead Ali Carter is sponsored by a Turkish Dentist FFS
That said, the 9 darter has been devalued as well with the number now recorded. I'm sadly old enough to remember Paul Lim banging 1 in and wondering how that was possible.
It may be fair then to suggest that in both sports , the revered players of yesteryear were just **** and making a meal of these things.
Apologies, I'm on the modafinil today and it makes me hyper verbose sometimes, hence the rambling b*llocks above . I could go longer if it helps?