Yes you are very right getting a work at up work is very easy compare to Fiverr of you have a good profile and portfolio you will definitely get hire after biding a project but for Fiverr of you want to make good amount of money and have your gig selected you need to work in a good niches like coding and eBook cover design they are the two niche that is trendy now on FiverrOn Upwork you can at least try to convince the employer by sending your cover letter and pitching your idea. However, on Fiverr you will have to wait for people to choose your gig. Therefore, I believe getting jobs on upwork is somewhat easier compared to Fiverr.