Stubbies are by nature low torque tools. If you need torque, you get a longer wrench. Where I think they shine is where you need an open end, crack something free with a long one, but can't simply turn it out with your fingers and still need an open end, but don't have the space to swing your long one. That's when stubbies come in handy.
If you can fit a ratcheting wrench on the head, then any fine toothed ratchet wrench will work. In that case, a stubby may let you ratchet a little quicker. But I run into this very infrequently.
In fact, I use my wrenches pretty infrequently. Almost everything I do I do with either a socket and a ratchet, or an impact gun. When I do reach for wrenches, (because a ratchet won't fit) I typically reach for the long high performance Snap On models and not my combos. Their box ends are nicer and I appreciate the extra length.
But this is just me and just my automotive work. I recently acquired and disassembled an old milling machine. I used combination wrenches for everything. Only time I used a ratchet was to remove the cap head screws using allen bit sockets. I even used the open ends for some bolts. But in this instance, I don't think stubbies would have helped.
There are a lot of tools I would buy before I bought stubby wrenches. Oh, and the only ones I ever use are my 8 and 10mm for car interiors. I have Snap On ratchet stubbies. And they are pretty convenient for that. I think I may have some smaller that have helped me do stuff under my driver's seat.