Rhiessan71 is not the only person to point to Robinson's physical presence as a major factor in Montreal beating Philadelphia. Ken Dryden, from The Game:
"We won the first game in Montreal, and were leading midway through the third period of the second, when Gary Dornhoefer, a tall, lean, irritating winger for the Flyers, moved across our blue line. From his left defence position, Robinson angled over to play him. In most arenas, when struck by colliding bodies, the boards whip obligingly out of shape, absorbing much of the force of the blow before whipping back into position again. Not so in the Forum. Forum boards are solid and punishingly unyielding, or always had been. Driving into Dornhoefer, Robinson hit him so hard that the Flyer's body dented a section of boards, leaving it an inch or so in back of where it had been just moments before.
"The game was halted, amid an awestruck buzz from the crowd, and for several minutes Forum workmen used hammers and crowbars trying to undo what Robinson had done. But when the boards were banged back in place, the impression remained. He had done it with such crushing ease: no cross-ice leaping, elbowing, high-sticking charge; just simple 'aw shucks' destruction, the kind that leaves behind the shuddering hint of something more to come. He had delivered a message - to the Flyers, to the rest of the league, to himself. A series that had been moving our way found its irrevocable direction, and we won in four straight games."