Using the moneyline you would have won the first two and but had to lay $155-160 juice on both of those, then you would have lost the third game against Atlanta laying around that same juice, then you would have won the Buffalo game probably getting a return of around $240 or so. I don't think it would be a good idea to lay 150-160 on the moneyline three games in a row. But if a team doesn't care about pre-season you shouldn't be worried about the spread. I mean, you know they don't care so it shouldn't be close.
so what you are saying is
+1
+1
-1.6 (to be fair to your estimate)
+2
over all +2.4
point proven.. who cares what juice you lay as long as the bet and underlying strategy works.