Worcester grabbed four tries to claim the bonus point but for Sanderson - making his 150th appearance for Warriors - the clean sheet and strong defensive effort to keep out a very dangerous Bedford side was just as impressive.
"We're pleased that we have got the bonus point and really pleased that we kept them out," said Sanderson.
"There are still areas we need to work on. We made a few more mistakes than perhaps we would have liked. But to win 32-0 is ultimately is a good result for us and sends a message to everyone else.
"We are 17 points clear now, but from our point of view there is still a lot of work and areas to improve on. In some ways that is the most positive factor, if we do get those things right then we are going to be a real force.
"Defensively we are very pleased. Bedford are a very good attacking side and we managed to keep them out and to nil - that is probably the biggest plus of the whole day."
Head Coach Richard Hill praised the home pack for putting their mark on the game within the opening ten minutes and Sanderson believes the team adapted well to the conditions and delivered the game plan.
"It was important, particularly as it was so wet out there, to be clinical. Our drive was good, our lineout was good and our scrum was good," added the former England international.
"Andy Goode ran the game well and I always felt we were in control of field position. When they had the ball we were comfortable.
"It was not a day for pretty rugby, it was a day for controlled and disciplined rugby. For 42 minutes we did just that and the bonus point was in the bag, job done as far as we were concerned.
"But to keep a clean sheet was important to us and kept us going. Ultimately, great seasons and great teams are built on great defences.
"That is something which we pride ourselves on and an area where we have worked very hard. We need to now continue in that vein."