Easy...
See...when your the Grizzlies...and your team gets so hurt that you have to fill it out with d league guys and Jordan fukking Farmar...well...you fall all the way to the 7th seed and end up playing a mostly healthy spurs team who just happens to be having one of the greatest defensive years ever...this is what you call unlucky...
See...when your the Mavericks...and your team is trash AND get's so hurt that Raymond fukking Felton might be your most complete player...you end up facing a team with two of the top 10 players in the NBA...and even though one of them plays pretty bad in the series...not even shooting 40 % from 2 or 30% from 3...it doesn't matter because you trotting out Raymond Felton, Deron Williams, some 7 ft end game boss ISIL looking dude, and a rookie who looks like Javele Magee while you have Javele Magee already on your team...oh and somebody on your team get's hurt every game and is either not able to play the next game or barely play in the next game, and nobody on the other team get's hurt...this is what you call unlucky...
But when you are GS...and you lose your MVP for at least two weeks...probably more...well in the first round it doesn't even matter at all because you are playing the most underachieving team in the NBA this year...from division champs and WCF last year to making the playoffs on their last game this year...who just happen to have an interim coach...who just happen to have their two star players want to get the other guy traded...so you get to skate by...AND THEN when you get to the second round where you are supposed to play a team fully capable of beating you without their best player...who themselves have two top 15 players in the nba...well...one of them breaks a bone in his hand on a random play...ruled to be out at least the next series...and the other one gets hurt and now is 50/50 to play anymore in the current series...
GS went from having to play a top tier power forward and a top tier point guard to playing the coaches son and a 7ft man who can't shoot jumpers, has no post moves, and can't even consistently hit the rim on his free throws...not sure how anybody can call this anything but lucky...
shyt is like the judge giving you custody of the kids so you duck child support and alimony...AND your favorite jumpoff sends you a text saying "I decided to not keep the baby"