On everything except rock-bottom price, yes. A roller banner is cheap, and it looks it under exhibition lighting, where a flat printed sheet goes dull and curls. A backlit banner stand glows, so it stays bright and sharp in the same lighting.
The differences that matter: a Bespoke LED Standing Light Box reads across a hall where a roller banner blends in, it looks premium rather than flat, and you refresh the graphic rather than reprinting a whole new banner.
A roller banner still wins if the only thing that matters is the lowest possible upfront cost. On getting noticed, the lit stand wins every time. Compare them on a free mock-up.