#4 Lesnar was always a better wrestler
Nobody in their right mind would call Brock Lesnar a good worker these days. Sure, he probably still has the skills; but his current booking of an unbeatable monster makes him deliver only a certain set of moves, and completely obliterate his opponent to a pulp.
However, even in 2013, Brock Lesnar was putting on great matches (remember the one against C.M. Punk?). Lesnar certainly has the ability, if not the inclination to go in the ring at full steam even now.
Corey Graves deleted his Tweet! More details HERE.
On the other hand, Goldberg has always been limited. Even in his prime, he got by with smoke and mirrors. At the age of 49, when age has definitely taken a toll on his body, Goldberg will be a shadow of his former self. As a consequence, Lesnar is a better in-ring performer.