Stable Diffusion's strength (one of) is in the ability to be guided by sketches and references, which is much faster and more expressive/precise than anything a

Stable Diffusion's strength (one of) is in the ability to be guided by sketches and references, which is much faster and more expressive/precise than anything achievable with a text prompt if you're good at it. If you want that, you want SD, it has vast amounts of related tooling around it. If text-to-image is enough for you, you need one of the commercial image generators with better prompt understanding.