I compete in no gi submission grappling at the "advanced" and "elite" level. Sometimes a high-level wrestler with little submission experience can enter these tournaments and survive or even win.
Two matches from ADCC 2009 illustrate this point. First was James Brasco v. Braulio Estima. Those who follow the sport will recall that 2009 was Estima's breakout year. What most people don't remember is that he nearly lost on his way to the finals of his weight category due to his facing Division 1 wrestler James Brasco earlier in the bracket. The match took place almost entirely in Estima's closed guard, with Brasco expertly defending all submission and sweep attempts. At the end of the match the score was 0-0 and the referee awarded the match to Estima, who went on to take gold in his weight category as well as the open weight category.
The second match is Andre Galvao v. Chris Weidman. At that time almost no one outside of the wrestling community had heard of Weidman. According to Matt Serra, Weidman had less than 1 year submission grappling experience when he entered the tournament. On the other hand, Galvao had already won the BJJ World Championships (gi) three times as a black belt and had taken bronze in his weight category and open weight at ADCC 2007.
The match was very competitive and very exciting. I haven't seen it in a few years, but I scored the match for Weidman. There were some borderline takedowns for Weidman that the referee did not score.
Now this is not a perfect analogy because Galvao and Estima were gi BJJ grapplers first and foremost. Brasco and Weidman would have gotten killed if they faced Estima/Galvao in the gi. That said, Estima/Galvao still had far more experience in high level no gi grappling than their opponents and nearly lost.