Sometimes away games make it a little bit more different because we know that even at home it's not a guarantee that they'll win but at least there's more strength and confidence when a club is backed by thousands of supporters in a match.
Home matches can never be compared with away matches because there is always a big difference and the opportunity because I have seen a club that's not actually good in performance but whenever it comes to there home matches they hardly lose matches, so perhaps just like you said sometimes even if most clubs can lose home matches but playing from home will give them more confident and opportunity to perform more than the way they were supposed to perform on there away match.