You know - honestly, I don't think the house matters - both of these teams are going to be really excited about this game whether in SB or CT, and I don't think they ever 'dread' it. And there is often a more relaxed attitude for teams in highly competitive games being on the road. Too often, the word 'defend' and the idea of having to protect something gets associated with a home court or home field - and that can distract from normal preparations.
It is like Geno talking about 'defending' the championship in preseason - he tells the team there is nothing to defend, no one is coming to take last year's trophy back. This is a new year and we are working toward winning new games and new trophies. And why no one talks about 'preserving the streak' or even thinks about the streak. It is todays game that matters, everything else is a distraction.
Or when coaches and teams leading in the fourth quarter of any sport start trying to 'defend' or protect the lead instead of playing/coaching to win the game - quite often it goes pear shaped on them.
NB: The Patriots coach was asked why Brady was still in the game last week with the score 26-3 and 5:30 left - he said he is still playing to win the game, and he has seen too much happen over the years to think about anything else. I liked that comment.