From this excellent Wall Street Journal article on wine judging, it appears that wine critics aren't particularly consistent, nor do they share the same opinions of a given wine.
Francesco Grande, a vintner whose family started making wine in 1827 Italy, told me of a friend at a well-known Paso Robles winery who had conducted his own test, sending the same wine to a wine competition under three different labels. Two of the identical samples were rejected, he said, "one with the comment 'undrinkable.' " The third bottle was awarded a double gold medal.
So, drink what you like, medals and points be damned!