Just my $.02, of course. Griner was a physical specimen, as many have pointed out. 6'8" players with her skill set are incredibly rare. However, while Stewie lacks the strength of a player like Parker (a more logical player to compare her to), her skill set and things she can do have already surpassed Candace. No, Stewie does not have the strength or post moves (although I don't believe Parker possesses the amazing right AND left handed hook shot that Stewie does) , but everything else about her game is far superior to Parker's, and I'm talking about the professional player Parker (ie. right now), not Parker the college player.
When her 4 years are up at UCONN, she will be discussed as the greatest women's college basketball player ever. So will she be as "dominant" as Griner? Well Griner was a 5. Stewie is truly a player who can play the 1,2,3,4,5 positions. All of them. And for real, not the joke that Parker can play all 5 positions.
Side note - Delle Donne is probably a better comparison. And I think she's a better player than Parker too. Delle Donne is stronger than Stewie and at 6'5", has a far better guard/wing game than Parker. But being stronger, she can also bang more in the post than Stewie at this point. Both of them are unreal.
I don't get the comment that Stewie can't control a game like Griner. Griner was a 5. She defended in the post. On offense, she played in the post. If you are talking a pure shot blocker and intimidator, you are correct about Griner, but she could not impact a game nearly the same way Stewie can. Stewie can play, defend, and score from everywhere. Griner could not.