Vieira by submission is a conditional preference built on a specific sequence: against Petrosyan he finished a takedown near the fence, advanced to mount and used strikes to create the arm-triangle opening. He must first bring Bryczek into contact and prevent an immediate reset; the finish is not automatic after a takedown. Bryczek can meet those approaches with punches and separate before Vieira consolidates position. His Tavares stoppage supplies a relevant offensive threat, although it does not establish that he will reproduce it here. Vieira also has a decision route: his jab, straight punches and distance management contributed to the Gore win. That prevents treating him as helpless standing. Submission remains the selected method because established top-position attacks are his clearest documented finishing route, not because 9 of 11 career wins translates into an 82% chance once grounded. Decision and KO remain possible for both men. The 58% winner estimate is editorial and uncalibrated; uncertain access to top position limits conviction. Bryczek can also win by submission if he secures position and finds an opening in transition. His single professional win by that method keeps the alternative open, but does not establish access or effectiveness against Vieira’s grappling.