Upgrade at safety?

A comparison of career stats between former 49ers safety Donte Whitner, who signed Tuesday with the Browns, and former Colts safety Antoine Bethea, whom S.F. signed Tuesday:

Whitner
Bethea
TeamGIntFFTklsYearTeamG IntFFTkls
BUF15101042006IND141090
BUF1511892007IND134065
BUF1301612008IND1620101
BUF1020572009IND164295
BUF16111402010IND1611106
S.F1521622011IND1602139
S.F.1612832012IND1600100
S.F.1622732013IND1620110