Megan's stats this year are quite comparable to Napheesa's stats in her senior year, and she was WNBA Rookie of the Year. Pheesa was also a "tweener" at 6-1, and similar predictions were made on the Boneyard about her WNBA future.
I particularly don't get your comment about "very little vertical". Ever since she was a freshman, but particularly this year, she has been getting rebounds against taller and seemingly stronger players. She did that against last year's Notre Dame team with Shepard and Turner, and she did it against Baylor a few weeks ago. She also did it against UCLA last year, who was a particularly good offensive rebounding team.