Teddy Hart was the most athletic and physically talented "Hart" to have ever wrestled. His had supreme control of his body as his coordination was top notch, his athletic ability was second to none in wrestling especially at the time, and he had a decent look for a smaller guy.
But with all that natural, physical talent, the guy just doesn't have the mental capacity nor social skills to be able to raise up the ranks anywhere especially if he has to cooperate with others. He is seriously delusional and sees himself as a bigger star in wrestling than he ever was. He has actually stated he's god's gift to wrestling and that wasn't a worked promo. He was given more breaks than almost anyone and time and time again, he screwed himself out of any chance of becoming a star yet he blames it on everyone else.
Teddy Hart got let go from the WWF due to being a complete idiot. He was re-signed to the WWE and then let go again for still being a complete idiot years later. He's been fired from basically every wrestling promotion and if that doesn't tell you something's wrong, there's nothing anyone can do.
Lastly, he has absolutely no sense of wrestling psychology and relies only on high spots and his athletic ability. This is the same guy who pushed for "anti-gravity" boots/shoes, or boots/shoes with loaded springs that would help a wrestler spring upwards of a foot. He pushed this concept and even tried to develop some in the mid 2000s and even as recent as 2017, he still thought it would revolutionize pro wrestling.
In short, Teddy Hart never got wrestling, never will. He was a never was who believes he was a great star who got the short end of the stick due to Bret (crazy), other promoters, and blamed his failures and shortcomings on others. Even in at age 38, he still thinks it's all about high spots. When I think of Teddy Hart, I almost turn into Cornette...
Ps, watch this match below and you will see the issue with Teddy Hart. It's a tag match and Teddy Hart starts it out against Doug Basham. They lock up and Doug was going to back Teddy into the corner and Teddy decides circle away from the corner, likely because he wanted to come out strong. Doug throws him and he does a tumble right toward Danny. Danny yells at him "You're a nobody," knowing Teddy didn't follow the plan. Still just a small hiccup but Teddy Hart goes up to Doug and says something to Doug and Doug is immediately pissed. Look at Doug's eyes at 1:32 in the match. And then after a short exchange, Doug gives Teddy two reverse elbows, which Teddy basically no sells and Doug gives him a vicious chop and Teddy drops down, as he should but gets right back up, no selling it. That pisses Doug off and Doug chops him about 4 more times and he doesn't go down, stands right up Doug puts Teddy in the corner, stands up on the second corner and legitimately shouts at Teddy for being a punk. Then has Teddy tag out and as Teddy is on the apron, Doug yells "You're lucky I don't come out there and smack the taste of out your mouth"