No he wouldn't. Spence would have trouble at 154 with guys who have a little skill, like Williams or Lara. At 154 you would see Spence isn't very big at all. .
Hmmmnn! Erroll Spence won every minute or every round shut out on the scorecards. Only difference is Mikey refuses to quit and took his beating like a man.
Spence is 5'9, with a medium build. He's smaller than Welters like De La Hoya, Margarito, Cintron, Mike Jones, Paul Williams, Leonard, Hearns, Forrest, etc. Stop it with that Spence is a huge welter foolishness. Lara often looks small depending on the opponent he is facing. Spence would look similarly small, at 154 against guys like Mungia, or Hurd
Canelo wins. Spence walks guys down and is physical. Canelo is too strong. Spence just beat a midget, chill.