Miller, who previously trained with Edgar and fought to a loss against Henderson last August, said Monday on The MMA Hour that he thinks Edgar is the better striker and wrestler.
The way Miller sees it, Henderson probably has the edge when it comes to submissions, but Edgar is too difficult of a grappler to submit. If Edgar doesn't get the knockout, he'll outwork Henderson for the decision.
"Frankie hits pretty hard," Miller told host Ariel Helwani. "I think Frankie is probably going to connect and if he can't finish him, then he's going to keep the pressure on him and beat him up the entire fight."
Miller last Friday stayed in a title contention by scoring a thrilling win over Melvin Guillard in the main event UFC on FX in Nashville. Miller wants at least one more fight before a title shot, possibly against Nate Diaz or the winner of Joe Lauzon vs. Anthony Pettis.
If Edgar and Miller both prevail in their next fights, the two New Jersey natives would be a perfect addition to the UFC on FOX 3 card, rumored to take place May in New Jersey.
"Maybe," Miller said with a laugh. "That sounds like fun."