Both ladies are in the top five of the 100 Million Views Club, according to Visible Measures.
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Visible Measures used their True Reach system to chart the total audience that has been exposed to a viral video, no matter where the video has gone on the Internet, and according to their research, both women have made the top five most viewed online video clips.
Susan Boyle's dramatic performance from "Britain's Got Talent" has been viewed 186 million times, landing her in fifth most viewed slot.
With ten million more views, Jeff Dunham's "Achmed the Dead Terrorist," a ventriloquist comedy routine, took the fourth spot.
Mariah Carey's "Touch My Body" music video was the third most watched clip, with 230,200,000 views, while the "Twilight" movie trailer took number two with 266,500,000 views.
And in first place — Soulja Boy's "Crank That" with 356,300,000 views.
But Susan Boyle could be in line to grow in the rankings. Soulja Boy's video netted the top spot after 21 months on the net, while Susan took fifth place in just three-quarters of a month, when the videos were measured.
Others on the top 100 list include Leona Lewis "Bleeding Love" in sixth, Avril Lavigne's "Girlfriend" in seventh, Chris Brown's "With You" in eighth, "The Dark Knight" movie trailer in ninth and Alicia Keys' "No One" in tenth.
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