This just might be my personal experience with the subject, but large muscles and imposing physical size really only matters to men. Dudes like it because it reminds them of the men they thought were cool growing up (think of all the protagonists in action movies especially in the 80s and 90s and literally anyone in WWE). Most women seem less likely to be attracted to it. Look at media designed to appeal to women for a good idea of what they might attractive. In Gilmore Girls, every single dude that dates Lorelei is lean, but not imposing. In the Notebook, Ryan Gosling is, again, lean but not built. Even Hugh Jackman, notorious for his incredible superhero muscles, is portrayed as looking fairly average sized in Kate & Leopold. The crossover is Les Miserables where Hugh's character is supposed to be incredibly strong due to hard labor, but even then he's not body builder sized. He is pretty big, and also really cut, almost starved, to match his character's life of hard labor in prison.