Third person can be implemented in a lot of ways, but I assume we are talking about over the shoulder with camera fixed to the character's facing.
In that case it doesn't make that much of difference to me, but I slightly prefer the better FoV and awareness of third person. One exception is when the character is supposed to be a 'blank card' in which case it helps not being able to see him/her.
In that case it doesn't make that much of difference to me, but I slightly prefer the better FoV and awareness of third person. One exception is when the character is supposed to be a 'blank card' in which case it helps not being able to see him/her.