Mine was somewhat different.
I had a TURP because of BHP. Pathology report showed less than 10% of the chips removed had PC with a Gleason score of 3 3.
That is low grade.
I decided on treatment. But if I did not I wanted a biopsy before hand as the TURP does not sample all of the prostate.
The reason that I decided on treatment was that I am 66 and in good health. But did not want to have the PC increase in say 5-10 years and not be as healthy and not having the options for some treatments.
And I found a relatively new study that indicated that if you had PSA of 2 or higher at age 60 and then got PC that the probability of it being aggressive is high (75% IIRC). And mine was 2.3 at age 59.
in general the success rate with both surgery and radiation are the same. But there are no head to head studies.
A study last year of people 2 years after treatment both those that had surgery and had radiation reported the same qualify of life.
But those are based on self-reporting and something that bothers one person might not bother the next one.
In general people that have surgery or more like to have urinary incontinence and people who have had radiation or more like to have bowel problems.
And I already have some minor bowel problems and the though of bowel problems was a real concern.
Also I did not like the though of 6-8 weeks, 5 days a week of radiation treatments. Although there are some that are shorter.
You asked about "leakage".
In some cases the rectum is damage during the surgery. The prostate lays right next to it. This is not a common problem. But i don't know the percentage.
Urinary incontinence and ED are common problems with surgery. But they typically improve over 6-12 months.
As you start looking at you options you will find more specific statistics.
In my case I had a catheter for 7 days and after it was removed I had urinary control after 8 days and my erections 10 days. But I know that quick of recovery is not common.
Besides the luck of the draw I credit that with being of normal weight and physically fit and active. A study has shown that those that are over weight has 30% more problems and those that are not fit have 30% more problems. And those that are both 60% more problems.
And I just finished a round of physical therapy for back and hip problems. And i practiced the kegel exercises before the surgery.
And I am glad that I had the surgery.
The pathology report of the removed prostate showed that the PC was more extensive that originally thought. It was up graded from 3 3 to 3 4. And the PC was into the capsule, but not through it. So it was still contained.