I used to believe that Brock Lesnar was a terrible candidate for the job as he seemed no where near the Phenom's level. The Undertaker deserved to face someone who was at the top of a major wrestling promotion. Nevertheless, i have come to realize that Brock Lesnar was the ideal wrestler to break the Undertaker's undefeated streak. In recent matches, i've watched the Undertaker grow old and sluggish. He began making more mistakes and became easily exhausted. During his match with Triple H at Wrestlemania, he suffered a concussion and injuries to his lower back. According to the storyline, he suffered humiliation despite gaining a victory. I would imagine that the Undertaker reflected on his age and retiring long before Brock Lesnar. If he made a huge mistake losing against a superstar that most fans despise at Wrestlemania, there would be a huge uproar. His entire career would end in disaster and his streak being broken by the most unfavorable superstar would cause such a great disappointment. The Undertaker could not let all of his fans down which is why he chose to take action. What set Brock Lesnar apart from the other superstars? He wasn't boastful. He was humble and didn't act as if he was better than the Undertaker like others. He didn't do any promos emphasizing the ending of the Undertaker's streak. Brock Lesnar faced the Undertaker as any other competitor.
Both the Undertaker and Brock Lesnar are MMA fighters. Both are aggressive, ruthless, and dominant in the ring. Brock Lesnar has defeated the Undertaker before under his American Big Evil gimmick and badly. Brock Lesnar is the beast incarnate and for good reasons. Both had an epic clash at Wrestlemania and when the Undertaker performed Hell's Gate on Brock Lesnar - He performed one of the most amazing counters. Brock Lesnar rather than tap out, picked up the Undertaker and slammed him against the canvas. Hell's Gate became the Undertaker's destructive finisher next to tombstone piledriver and favored in later years. Most wrestlers who faced the Undertaker would pass out, tap out, or go for the ropes. Brock Lesnar was demolishing the Undertaker already delivering three F-5's in a row.
By the time Brock Lesnar finally pinned the Undertaker, the referee counted "1! 2! 3!" and it was over. Paul Heyman was so shocked along with everyone in the room. Brock Lesnar had beaten the Undertaker and barely broke a sweat in doing so. Some booed the Undertaker but most fans nevertheless cheered him on as he exited the ring.
Brock Lesnar has caused many injuries in MMA and pro-wrestling alike. He has shown to be a ferocious opponent time and time again. Brock Lesnar is a 5-time world champion and one of the best paid athletes in history. It's finally time for the Undertaker to push a new pro-wrestler unlike pro-wrestlers such as CM Punk and John Cena. Brock Lesnar was the best candidate for the job being a pro-wrestler who reflects the new face of a revolutionary era in WWE and UFC entertainment.