I voted for DavidG on the likely decisive impact of those transitions down the flanks. Engima has an absolute juggernaut of an attack with an immense collective dribbling ability. But where I leaned towards DavidG was on the moments of transition and either full-back picking up the ball. I'm not quite sure how those flanks are defended - Ronaldinho won't track back, Eusebio is a tough sell tracking back into midfield. I get the energy of Souness and Xavi but don't think either will be suited to stopping Carlos or Cafu in full flight. And that sort of gameplan maximises what you get out of Bale despite him being probably the weakest attacking player on the park. The front duo are well suited to meeting that kind of service. There may not be a conventional no9 in the team, but Pele and Gullit are that well rounded and multi-faceted it's not an issue for me. There's nothing missing in that attack that DavidG's gameplan needs IMO. While the likes of Pele and Eusebio are used to playing with or just behind another striker, that was as much about the need for them to play slightly deeper to have a greater influence on the game in a more conventional and less star-laden club or national team setting. In the modern game I'd imagine they could well be the focal point of their attack - see how Cal used Pele as a false 9 with Messi and Ronaldo flanking in another draft. And Eusebio is the closest thing to Ronaldo from the olden days. For me the use of both Pele and Eusebio here is fine, their qualities match what both managers want them to do on the ball.
It would be a close game though, probably a 3-2 or thereabouts, and a win for DavidG would hinge on Seedorf and De Rossi playing a very functional and disciplined role, and ultimately Baresi producing a masterclass.