I'm sure Nelson got the better of him on the majority of plays. Simmons to me still needs to become much more versatile to be in Nelson's league. He is a VERY strong DT who can push OL back and create pocket collapse. However, he lacks technique and pure speed to blow by guys like Nelson and other quality OGs on a consistent basis.
There are very few elite QBs in the league and finding one can come down to just being lucky.
There are some who think we need a QB like Mahomes or Jackson to win games. IMO, not true.
Call me old fashion but I prefer a pocket passer who has good footwork.