242 ships x 150 crew = 36,300 Romulans vs 20 Androids, Soong, PIcard + Friends.She wanted to unify androids against organics and support her plan of summoning the Admonition synthetic dudes to wipe out the organics. And the consensus seems to be that Sutra is the one who killed the android but Narek took the blame which was part of the plan.
Are there more androids on that planet than we have seen?