Probably because Bergkamp did not start like half the games that season.
I think the best way to look at it is how many players we've used in total that year amd out of those hpw many played more than 5-10 games. I'm sure it can't have been that many and definitely not more than the main 11+5 subs we had at the time.
Other than the main set of names you mentioned I can only think of Parlour, Edu, Wiltord and possibly Reyes who played significant numbers.
We were very fortunate not to have had mamy injuries or suspensions at the same time that year given how small pur squad was.
