I wish that the (shyt) announcers would portray Brock's lack of emotion as what it really is: resolute confidence. There's no reason for Brock to scream and bluster about the match because he absolutely
knows that he can not only beat Cena, but demolish him. He's beaten better, and in different arenas to boot. Why should he scream if that's the case? I like Brock's delivery but add some intrigue for the people.
@Kidd Dibiase makes a good point when he says that what they've been doing for the last 2 months or so has been building to this very pay-per-view. It's been a technically good build. Key word there being
technically. What the lack of interest in most of the card exposes is something WWE's been struggling with for ages. And that's creating plausible stakes for the feuds that people can believe in.
Despite my critique above, what Lesnar, Heyman and Cena have done a good job of is creating legitimate stakes for the match that people can believe in. Brock's the unstoppable force that ended the insurmountable streak. Cena's the immovable cornerstone of the WWE. Lesnar's said that he won't stop with simply taking Cena's title away, but is going to break Cena himself. Will Brock follow through on his promise? Will Cena be able to stop this unstoppable force? It's all very simple, and very well done.
But where are these stakes for most of the rest of these matches? Of all the matches on the card, only Swagger/Rusev really feels like it has any stakes to it. And even that feels very paint by numbers. Everything else either feels routine and paint-by-numbers (Ziggler/Miz or Jericho/Wyatt, for example) or like it's only meant to progress the feud to it's next stage (Rollins/Ambrose). So why should we want to watch the rest of the card if the rest of the card doesn't feel like it has important stakes?
People want to believe that winning and losing matters. Everyone in the world knows it's staged, yet they still want to suspend disbelief and believe that their guy winning is an important moment when it happens. It's a simple concept that can be easily gathered from just sitting in a crowd and talking to a random stranger about the show for a bit. And yet WWE clearly doesn't seem to really understand how this works. It's mindboggling, really.