And I can tell you right now that the reason for this is because Goldberg was/is absolutely massive. You're talking about a former football linebacker (correct?) who was 6'3/270lbs. Crimson is billed as 6'6/250, but his body type is much more athletic and much less "brute" than Goldberg's was, which is precisely why the visual appeal isn't there as much as it was with Goldberg. In short, Goldberg was built like a brick shithouse. Crimson is built like a muscular swimmer.
Add to that the fact that he's not booked to actually dominate matches, nor does he use very many power moves in his ring set, and it's easy to see why he's not coming across as dominating.
Right, so if he isn't dominating, what is he?
The answer is mediocrity. He doesn't do anything that pertains to being a wrestler better than anybody else. About the only thing that stands out about him is his hair.
His debut storyline was cool with the Main Event Mafia tease and in that role he was fine, but when his role shift to "lets give him an undefeated streak", his flaws became very evident. I think it was at that time that some fans thought TNA had gotten a guy that is in that typical wrestling superstar mold as he's tall and muscular. These days, no one really buys that as evidenced by the failed pushes in WWE of people like Ezekiel Jackson, Mason Ryan, and others. You have to bring more to the table and the guys that do will succeed. Until Crimson brings anything else to the table, he's just another generic muscle guy.
I don't see this potential that people say they see. Then again, potential is a very scary word. You can say it about anyone in hopes that they get better and then turn around and say "see, I told you he had potential", but it's still a dangerous line to walk. Maybe down the road he can do something to distinguish himself, but he hasn't yet.
Going back to your original point IDR, I think his matches are indicative of something. He gets beat up, hits one move and wins. That means he's either very limited as a worker or it's just poor match layout. Either way is telling. The kid is big and even though it's a lanky big, he probably should take that intensity to the ring. Toss some people around, get angry! Honestly, drop the undefeated thing too because he's in a tag team and just because Morgan will undoubtedly take the fall when they finally lose, that doesn't mean he's undefeated and it's kind of silly.
Had TNA had OVW when he signed, he would have been a perfect candidate to go there. If he had direction and his matches were better upon debut, maybe we'd think differently. As of now, he's basically an overrated generic big guy who isn't even really that big.