3. It Would Make WrestleMania Meaningless
As angry as it made both fans and those in the wrestling business, there's no denying the fact that Brock Lesnar conquering The Streak is a moment which is going to go down in WWE history as one of the all-time greatest. It was a ballsy decision by Vince McMahon, but on a show with a fan pleasing ending to Daniel Bryan's story, he could afford to take a chance by ensuring WrestleMania 30 was a show no one would forget. For twenty one years, The Streak remained undefeated. Lesnar changing that to 21-1 (well, 22-1 now I guess) is a huge deal, but should he lose at SummerSlam, does that WrestleMania victory still mean as much? No. It becomes a fluke. Fans will start viewing Brock as someone who got lucky, and the fact that he's responsible for bringing The Streak to an end will be overshadowed by a loss when it really mattered. After all, the feud between Lesnar and The Undertaker going into WrestleMania 30 wasn't that great and actually ended up being rather forgettable (the fact that Brock being stabbed in the hand by a pen was a highlight says it all really). As a result, going into WrestleMania, everyone was convinced that while the two would no doubt have a good match, The Streak would remain in tact. It just didn't feel all that important. SummerSlam on the other hand is being billed as the biggest rematch ever by the hyperbole loving WWE. If Lesnar loses that, it matters just as much as The Streak coming to an end - if not more so - and makes that historic WrestleMania moment a footnote in the story between these two titans.