As nouns the difference between suckiness and luckiness
is that suckiness is (slang) the state or condition of being sucky; inferiority or badness while luckiness is the property of being lucky; good luck.
suckiness
English
Noun
(-)
(slang) The state or condition of being sucky; inferiority or badness. luckiness
English
Noun
(-)
The property of being lucky; good luck.