Tour de Romandie is not the Tour nor is it a grand tour. Evans while an elite performer in the sport of cycling has shown that over the course of a grand tour he will find some way
not to win, be it by crashing, flatting, injurying himself, bonking, having a mental meltdown, or just crumbling under the pressure of expectation. His big heart is his major attribute and at the same time one of his primary obstacles. Add to that an intuitive ability to select the teams that will support him the least (He likes challenges?) and you have multiple reasons why Denis Menchov has 3 grand tour wins under his belt and Evans has zilch.
Maybe this year he will put it all together and win the Tour. If he can prevent Andy Schleck from winning I promise not to say a negative word about Evans for an entire year, that's how appreciative I would be.