I think traveling by motorcycle "provides more options and opportunities" over the bicycle. I've done both - many miles by bicycle years ago, and the motorcycle now.
On a bicycle, you tend to take only the lightest travelled roads - black and grey lines vs red and yellow (local roads vs. highways). On a motorcycle, all roads are an option; not necessary the preferred option, but still an option.
On a bicycle, you tend to commit to a route and its difficult sometimes to alter the decision. On a motorcycle, its much easier to "go back" in direction, to take another route that someone recommended.
Then again, a bicyclist tends to be more thorough in his route planning, taking the right choice to begin with. Motorcyclists can easily blow past their turn and easily rationalize the change of route.
On a motorcycle, its easier to decide on the longer route to get to the same destination.
Motorcycles have lights, should one get caught riding after sundown.
Bicyclists do travel slower - it is easier to stop for a quick photo. They also tend to keep moving - seldom stopping to stay a few extra days.
On a motorcycle, you can "make up time" better.
Seattle, Washington USA
Chiang Mai, Thailand