I agree that SD and Indy won't be able to stop NE's offense. But IMO our defense will only be able to contain Indy's passing attack and LT. I expect some high-scoring games with the Colts and Chargers.
As for Denver, and I can't believe I'm saying this....they had a much better shot of beating us with Jake Plummer at QB. His mobility, effectively used on rollouts and bootlegs, was a problem for our defense and this was most evident in Week 3 last year. Plus the Snake only committed 1 turnover in 3 games against NE.
Now that Cutler is starting, Denver has a traditional drop-back passer, the kind that Belichick loves to feast on (think Manning pre-2005). His receiving options are talented (Walker, Graham, Stokely-when healthy), yet not impossible to neutralize. I believe our offense's use of zone-blocking will better prepare our D for stopping Denver's running game, and IIRC we were able to contain their running game the last 2 meetings.
Still, stopping Denver's offense alone won't get us past them. Their D has managed to shut our offense down the last 3 meetings, with the exception of garbage-time TDs. Not only did they get a talented CB in Bly to complement all-world Champ Bailey, but they also hired Jim Bates as DC, who has experience shutting down our offense from his days in Miami. Their pass-rush is still unproven, yet their LBs are quick. Time will tell whether the loss of Al Wilson will have an impact on their D.
If our offense is as loaded as we think, come playoff time, a matchup with the Broncos will be very intriguing. I'm thinking a low-scoring game decided by a FG.