Taylor did have more personal fouls than INTs (he actually had more personal fouls than INTs, forced fumbles, fumble recoveries and sacks combined), but he didn't lead the league. Taylor was called for three personal fouls. Three players -- Madieu Williams, Robert Griffith and Darwin Walker -- were called for four.
Taylor, in fact, has been called for three personal fouls every season that he has been in the league (so he also has more career personal fouls than career interceptions). Roy has been in the league for five seasons and has been called for three personal fouls -- total.