Most of those assists(4 in total I think) were from corners if I remember correctly......He was decent at best IMO, disappointing for a player of his talents. Euro 2000 was his best tournament; best man on the pitch after Henry in the final.
Totti's passing and vision are up there with the best I have ever seen, but he's not got the physical qualities required to be a dominant player at the highest level in the modern game. A player that's as slow and immobile as he's is simply not cut out to play so further forward in this day and age IMO.
It was funny watching him the other against Inter, as soon as Roma lose the ball, he just stands still and does absolutely nothing whilst the rest of the team work so hard to win back the ball. He's a genuis though.