Either of them which leaves you clean is fine.
We in India have been used to water.
In third world countries we have certain mortality associated with it.
Personal hygiene which includes PROPER hand washing is imperative after relieving oneself no matter what method of cleaning is done post defecation.
Coupled with good hand washing water takes an edge. Wipes definitely improve cleanliness over dry tissue. One can wet the tissue a use them as wipe after using dry tissue. But make sure one washes their hands well and nails are the main culprit.
The thing is proper handwashing after every bowel movement might not be possible for those with no access to warm water and soap. They then contaminate doors in shops, buses and public transport, food etc etc with faeces