Being half the size might have something to do with it. Jacare just took his arm and put a kimura on him. It was very simple.
Half his size? Terere is not that big he is smaller then Jacare and him and Marcelo grappled at the same weight it wasn't in the open weight. Terere even fought in mma at 170 he would be a fairly small 170 as well. Here is a pic of Terere and Galvao (who also grapples at the same weight as Garcia) This content is protected Don't try to down play Terere wins over Garcia he was an absolute beast in his prime and had it not lost it on that plane he would probably still be dominating just look how Galvao and Moraes (both his students) are doing.
The greatest BJJ fighter of all time is this guy: [ame]http://www.youtube.com/watch?v=nIk8XckFH3c[/ame] Results speak for themselves no conjecture.
Are we talking the best BJJ practioner in terms of winning BJJ competitions, of the best BJJ fighter who does what BJJ was invented for, Vale Tudo. Nog is a very strong candidate if we are talking about BJJ fighters
Rickson stood out more than any of the current guys do during his prime but the standard of BJJ has IMHO moved on since then as its popularity has mushroomed.
As far as pure grappling goes, I don't know what to think of Rickson in comparison to guys like Roger, Jacare, Marcelo, etc. Those guys are the best for my money, Roger especially. Rickson has a lot of prestige, but not a lot of proof. Honestly, I'd favor Arona over a lot of the more reknowned names, at least in no-gi. He's just a terrible matchup.