WWE Superstar Austin Theory knows it's damn near impossible to replace his former boss, Vince McMahon ... but there's one person he believes can and will get the job done, and that's the billionaire's son-in-law -- Triple H!!
TMZ Sports spoke with 25-year-old Theory -- who was with rising women's star Raquel -- out at LAX ... and asked him his thoughts on HHH succeeding Vince as the company's heartbeat.
"Triple H, I feel like he has a very creative mind," Theory said, "and I think now he always says it's very hard to fill Mr.