I wish I could have been on this episode to see and taste it in real time, and without actually trying the dishes it's impossible to comment on the flavors. What I can say is this: seasoning is everything. You could have the most fabulous dish on the planet, but without salt to coax out the subtle flavors, it could simply fall flat. Conversely, if something is grossly over seasoned, all you can taste is a mouthful of seawater. The only way to definitively balance between those two is to taste. Always taste. It's one of the fundamentals really, and one of the first things you learn in culinary training.
Now, as a modern etiquette columnist for New York mag, I agree with Kerry. The chefs shouldn't have just shoved a bunch of food in their mouth in front of the guests. That would indeed be indelicate. But in a competition like this, they could have easily dished up a small portion, turned away from their diners -- heck, even used each other as a block in a discreet way -- and taken a taste for seasoning.
Would that have saved Mark? I can't say. Again, I wasn't there. But from what the judges said, it seemed the real issue was that the simplicity of the dish fell flat. There's a trend in the culinary world right now to get really heady with food, deconstructing dishes, waving a magic wand, and turning them into a billowing cloud of wizard smoke, but the fact of the matter is that the simplest of dishes are the easiest to screw up. A Neapolitan pizza or a carne asada taco are so deceivingly straight forward, but if just one element is askew or a singular ingredient isn't perfect, you're done-zo.