I think that natural grass thing is overhyped. Kind of like "He's the only player since the merger to score in 10 straight games while wearing women's underwear." You see it all the time and it's kind of funny. "Figures lie, and liars figure..
Anyway, the main thing about playing on natural grass is, they're all away games, with a few being early starts. You can probably find a lot of them are September games too, where we annually start out slow.
The Rams are improving, but I wouldn't place much weight in the Dallas game. They're not as good as last year, they're surprising no one. In fact, they've gotten beat up a bit this year, and I think Sean Lee is injured. Not sure when it happened, but that's a big deal on their already weak defense.
The only thing that worries me is Toddy Gurley's running game. But if our defense will "Do their jobs," and stay in their lanes, I don't see a problem. This is a historically good run defense that has held RBs to below 3 ypc, but lose focus and let a big run get past them. If it weren't for those uncharacteristic busted "coverages" on the running back, there would probably not be a 100 yard rusher against us.
So if they "pay attention to details" as Earl Thomas said, I see a good game with us coming out on top. And it's about time.
And if the Rams play this game like it's the most important game of the year, it will be their downfall.