The key word here is Opinion
There are as many opinions as there are reviewers, so whom can you rely on? Let’s kick off with this example from Dr Vino :
‘… some flash points have emerged, most notably Cos d’Estournel [2009]. Parker gave it a score of 98-100 with an asterisk calling it “extraordinary … one of the greatest young wines I have ever tasted,” while Neal Martin who also writes for the Wine Advocate lamented the alcohol level, compared it to a wine from the Douro, and scored it 89-91. Tim Atkin noted the 14.5% alcohol on the label, called it over-the-top, compared it to an Australian Shiraz and gave it 95 points. John Gilman wrote that it was “one of the worst young wines I have ever had to taste, as it displays an utter contempt for both the history of its region and the intelligence of its clients … I cannot imagine having to drink it. This is a train wreck of monumental proportions. 67-68 points.’