Re: What technique would you apply to neutralize Brazilian Jujitsu attacker
If you want to use Aikido against someone trained in BJJ, you should take the advice given in post #11 by Michael Varin. He summed it up nicely in one paragraph.
"Learn to grapple", interesting advice since Aikido is clearly a grappling oriented system. It deals with grappling over a weapon, but it's still grappling.