I'm not sure that the general consensus on the 14 was poor. I recall some returned it because it was too 'pepperly' for their liking, but I seem to recall there were just as many who quite liked it, me included. Funnily enough, the 14 has the best score of the 3 on vivino.
i agree, have both the 2012 and the 2014 GSM and i really liked the 14, more so than the 12 which also had the labelling issue on the bottles.
would have got the 2015 GSM if i didnt get the pinot instead on Tuesday.