Yes, it matters. It matters greatly, I'm not impressed with him beating up on crap teams - that's actually a pretty big issue with this team as a whole. We put up 40+ on scrubs just to look like dog crap against decent teams.
When I hear "MVP they have to raise their game consistently against great teams. He didn't play a great game against the Chargers, he was serviceable. The Bucs and Cowboys game was the first game of the year, there's not a ton you can take away from this stuff. We didn't have a very difficult schedule early on. Dak's best game of the season was probably the Raiders game, but I'm not impressed with is performance in the first 6 weeks and I'm not surprised he started to look bad once the schedule and defenses he faced were slightly tougher.
We have context now about the teams you are talking about. The Patriots were not good, they were a 2 win team that got hot mid-season and we faced them BEFORE this. Carolina was 3-0 and then went on to win...2 games the rest of the season. Chargers were a good team all year and Dak didn't play at an MVP level against them. I said the best of the bunch was his game against the Bucs, I don't deny that.