piano chord
Asus2
A1B2E5
The third replaced by the second. Nothing in it decides between major and minor.
What is true of it
Asus2 is A, B and E — 1, 2 and 5 counted from A.
These are also the notes of Esus4/A. Which name is right depends on what is underneath and what came before — the notes alone do not decide.