I don't know that the outcomes from either are better; just different.

Most people who get radiation don't have long-term incontinence — any issue clears up quickly — but it can happen.

I had some permanent mild radiation cystitis that manifested a year after radiation, though I've learned to control and avoid the incontinence so it has little/no impact now.

A hot beverage and dog sound like a better choice than worrying about past hypotheticals in any case.