i don't know who said she compares to adam, but i don't think so at all. she can SCREAM, that's about all, she can't hit those notes nicely when she SCREAMS either.
i think Krystal compares way more to adam than siobahn, or however u spell her name.
but to compare sibhan's SCREAMING to adam's CONTROLLED high notes is way wrong, she's not that good either.
my 0.02