If there is one place where the 'sport Vs Street" thing should not raise its head, it is in BJJ.
Why?
Because BJJ uses the exact same stuff for BOTH.
It has been proven and shown over and over that the core principle of BJJ - positional dominance- is the key to survival in and out of the ring.
The Gracie marketing machine aside ( and when speaking of BJJ we MUST always put that aside), the fact is that BJJ and GJJ use the same principles and techniques regardless of sport or street.
The person in better position has the better chance of winning and by better position I mean the position for THEM from which THEY CAN FIGHT WELL.
The base of BJJ is "position before submission", this emphasizes the importance of the key element in BJJ ( and every MA really) - positional dominance.
The next stage is - submission from every position.
This is where the practitoner has developed his game to such a level that ANY position is a position of potential dominance.
Sport BJJ has some issues, yes BUT the majority of successful sport BJJ guys make the transition to MMA pretty well so that means something.
And no, biting and eye poking do not work to end a fight.
Psalms 144:1
Praise be my Lord my Rock,
He trains my hands for war, my fingers for battle !