I think there is an argument to be made for both. Perio requires great skill with a scalpel, sutures, etc. Pros, on the other hand, requires skill with the handpiece. I wouldn't do either unless you have very good hand control.
This is comparing apples to oranges. But short answer, both have high level of demands.
Example:
High:
Perio - GTR on a very high esthetically demanding young female with a thin biotype covering #8 to match #9 with a high smile line.
Protsth - same scenario but doing a porcelain veneer on #8 when she wouldn't let you prep #9 at the same time and she is getting married in 4 weeks.
If you have any problems with your hand and/or wrist, neither specialty would be a great choice, try GP private practice or teaching in school.
Pros. Perio residency consists of three years of memorizing literature citations and specialty propaganda. I'm not sure you ever have to touch a patient to graduate.
Pros. Perio residency consists of three years of memorizing literature citations and specialty propaganda. I'm not sure you ever have to touch a patient to graduate.