From cyclingnews article:
"Pretty much every day is a GC day. In the Tour, there were only three mountain-top finishes, which means there's very little room for error there," Froome said. "If you get one of those wrong, like I did at Peyragudes when I lost the yellow jersey, that makes you think that with time trialling as my forte, I'd rather just focus on the time trials and play it safe on the climbs. I wasn't willing to put everything in and risk losing everything."
The Vuelta, with so many summit finishes and so many climbs, is a different story. "I can afford to gamble a little bit, give a bit of a go one day and if it doesn't work out, then I'll do things differently tomorrow," Froome said.
"The Tour was my main focus of the season, to win it. If that meant playing things safe on a daily basis, making sure I was always at the sharp end but never absolutely emptying myself on any one of those days to win a stage, then obviously that was the way to play it. Here at the Vuelta, there's more space to gamble and with 3,500 kilometres in my legs and a good 2,000 kilometres of training afterwards, I've certainly got a bigger base coming into the Vuelta and I'm feeling more confident on the climbs."
Interesting. I'm starting to understand why I read a lot of people prefer the Vuelta to the Tour.
He also had some out of touch opinions, at least to me, when asked about the Team Sky financial advantage.