#3 Because another high-profile loss could hurt Braun Strowman

Braun Strowman is beyond the shadow of a doubt one of the most intimidating WWE Superstars of all time. However, just like in the case of Big Show and Kane -- who were once regarded as two of professional wrestling's most dangerous monsters, and were eventually relegated to mere lower-card Superstars -- Strowman too could suffer the same fate.
I vividly remember being legitimately intimidated by Masked Kane as well as the 7-foot 500 pound Big Show back in the day. Nevertheless, due to both Kane and Big Show losing one too many high-profile matches, particularly at pivotal PPV events such as the Royal Rumble, WrestleMania, SummerSlam and Survivor Series; their on-screen characters' credibility took a major hit!
Did you know a top WWE Superstar just wrestled outside the company? More details HERE
Needless to say, the WWE is well aware of the fact that they have too ensure avoiding making the same mistakes with Strowman's on-screen character. Another high-profile loss at an event like WrestleMania, would severely damage Strowman and his monstrous aura...