All of these numbers are World Series since 1980:
The Higher Seed has a winning record in games 3,4 & 5 of 22-15.
The higher Seed has won 10 World Series on the road, only losing 5 with the 2-3-2 format.
Bleacher Reports small sample size was convenient to their point, as 3 of those 5 wins have come in the last 5 World Series that didn't return to the home ball park. Not coincidentally, the All-Star game also determined home field advantage since then.
But all in all, since 1980, the team with 4 home games has won 25 World Series and only lost 8.
Even since the change in 2003, the team with home field advantage has won 7 of 11 World Series titles.
Sorry James - no data supports your theory.
EDIT: I also need to correct one thing I said earlier. Home Field for the World Series used to alternate between the AL and NL - it wasn't determined by record. So the 2003 change is probably not as significant as I thought.