what is appealing about vbloggers? – nursing homework essays

Here are two videos for Emirates Airlines, first class travel. The first one is paid advertisement by Jennifer Anniston. The other is Casey Neistat, a prominent vblogger on YouTube (was unpaid, but did get an upgrade to $21,000 Emirates first class).
Jennifer Anniston:
Casey Neistat: 

Generally speaking, what is appealing about vbloggers? What make a vblog go viral?
Who is the target audience /target customer segments for $21,000 Emirates Airlines travel ticket for a 7+ hour flight? (Think global)
Connect Anniston and Neistat videos to the target audience? Which one is a better fit? Or, does this matter?
What are the nuances that make either one of the videos more successful?
How does Emirates Airlines measure the success of its promotional efforts?