According to a Portuguese interview translated by
No debate whatsoever: Renzo is the single best Gracie to adapt his art for mixed-style competition. He’s defeated five former UFC champions -- two of them heavyweights. 42 is the wrong age to make a run at it, but his time in the ring will be entertaining while it lasts.
Strikeforce’s signing of Melvin Manhoef couldn’t be more dissimilar. Gracie has an obvious ground reputation; Manhoef is easily tied up there, but his striking is an indication of what would’ve happened had you shot up a 1988-era Tyson with PCP. A Manhoef/Cung Le fight would be real Greek mythology stuff. Just don’t give Manhoef Matt Lindland before then.