Are you trying to claim Detroit has some kind of advantage because of those boards? As if a completely unpredictable bounce would somehow benefit them?
No one is saying its completely unpredictable except you. I don't know why you are saying that the boards aren't an advantage when its quite clear many of the bad bounces and goals scored against Pittsburgh in this series were because they didn't understand how the boards work and the Wings did.
Special home ice boards have played a factor with a number of teams, often defining them: Boston and their small ice surface with tremendous give when players are checked into them; Buffalo with their rounded corners and Zamboni driver who pushes the board when the puck is dumped into their end; Montreal, with the concrete reinforced boards that no one would dare check anyone into; similarly, all the teams with seamless glass; Edmonton with its extremely fast ice surface; New York, when the "zoo" comes to MSG during playoffs and wrecks the surface; the extra wide int'l ice.
In some of those cases home ice is a disadvantage. Any team with seamless glass risks serious injury on their team which probably lead to them being removed in Vancouver.
GG, I wouldn't count this as a "small" advantage at all. Would Boston be the team it was in the 80's and 90's without the Gardens? Certainly they needed Ray Bourque and co. but their style, clutch, grab, and check into the boards at every opportunity, was based on their skill to exploit an illegal rink.
The same thing is happening in Detroit.
Other than that, every team has the same advantage at home: the fans and the last change.