GT = Recoverynoddy69 said:Good question but I feel it needs to be broken down further.
What is the most important attribute do you feel for a grand tour competitor?
What is the most important attribute for a one day classic contender ?
Cycling is so diverse in disciplines that it really depends on what you or the team want to achieve when you look for attributes in a cyclist. Stage wins in the mountains, sprints,one week races,one day races and classics and the grand tours all require different attributes depending on the nature of the race.
A grand tour winner will be the most consistent over all the disciplines, usually excelling in one. A week long race can be won by a sprinter or a climber or a tt specialist depending on the nature of the race.
So to ask in professional cycling which attribute is the best is quite a bit more complex than it seems.
Classic = Endurance