Today it is athlete vs athlete not style vs style.
For example:
Can any sambo fighter with 2 years Sambo training beat Buchecha in a grappling match?
Can any Sambo fighter who holds a master of sport beat Maia or BJ penn?
I think for both these answer it is a no. If you think Sambo always beats BJJ then a mediocre Sambo fighter can beat any BJJ fighter no matter their level.
It is athlete vs athlete but I think Khabib will be a UFC champion.
For example:
Can any sambo fighter with 2 years Sambo training beat Buchecha in a grappling match?
Can any Sambo fighter who holds a master of sport beat Maia or BJ penn?
I think for both these answer it is a no. If you think Sambo always beats BJJ then a mediocre Sambo fighter can beat any BJJ fighter no matter their level.
It is athlete vs athlete but I think Khabib will be a UFC champion.