Wiggins usually has less bad days than Nibali and Gesink. I would not say that Wiggins had no competition but even Evans said recently that he was surprised how competitive Wiggins was and for how long in 2012. Although Evans was similar in 2011 when he also won Romandie and was second in Dauphine to add to Tirreno. He started the season well and kept it going. Classics before the Tour probably don't matter too much but before the Giro, Nibali is probably doing the right thing due to the much shorter break before the Giro. But I agree that Wiggins will have to have a bad day in the mountains to give the others some hope. It's all about whether he can replicate his Tour form. If he can, his opponents have the job ahead of themgreenedge said:Last year though Nibali raced a very full schedule, Oman, T-A, Classics (where he had great form) and then the TDF. This year if he did not race the Classics as much he might have better form for his GT the Giro.
That all said Wiggins rode a lot of races to before the TDF but Nibali made more of an effort in each- Wiggins in all but P-N had no real competition.
The reason why i think Nibali or someone else (mainly Gesink) could win is the days Wiggins has a bad day, they will not.