Vishy has more stamina in my opinion. I think Magnus showed a lack of stamina in his losses to Ivanchuk and Svidler after he spent energy to beat Gelfand in the candidates.
So if Vishy can keep the score even he should be favored going into the latter rounds when Carlsen's stamina starts to wear thin. But if Carlsen can get an early lead, he should be able to win the match.
Who do you think is having the good chance to win the title this coming NOVEMBER?