Because it might take the both of them to come close to The Greatest.
Standard Arena match, with all three men having no idea how to operate a Ganmen. Also, the starting distance is the same but this is a LEMANS START...with open cockpit.
Where all 3 pilots must run to their machines, figure them out to a degree where they are good enough to fight, and then fight each other.
Manny & Floyd in Gurren Lagann VS Mohammed Ali in Lazengann.
Who takes it!