If teams play a zone against Philly, the superior passing of Iggy, Wade, and Hinrich is going to kill them, as will the post game of David West.
I'm not sure how much different the success rate would be from the real Heat against the zone compared to this 6ers team.
I think it would be similar. As mentioned above, though, it wasn't the zone that stopped the Heat, it was Lebron wilting under pressure (or whatever it was).
Of topic -- nick and Rondo can defend Lebron all they want -- but it really was very strange to see Lebron play against the Mavs. People say he "quit" against the Celtics, but I always thought that was nonsense. He had some bad games, but still seemed to be trying. Against the Mavs, I have no idea what it was. He'd have open lanes to the basket, and he'd dump the ball off to teammates instead of shooting. I don't know if he was afraid of failure or what, but I think the Heat losing says more about Lebron, and less about Dallas' zone (which, again, they didn't employ that much, and which wasn't that successful when Miami attacked it aggressively.)