For those who do not know, there are currently six different T1 frigates for each empire. Each of those frigates fulfills a specific purpose and has distinct traits as well as a specific T2 counterpart that mirrors its T1 partner:
T1 logistics → T2 logistics
T1 exploration → T2 exploration
T1 assault → T2 assault
T1 ewar → T2 ewar
T1 tackle → T2 interceptor
T1 combat → T2 stealth bomber
And of course, the only exception to this rule is Amarr, where the Tormentor as T1 combat ship has no T2 equivalent at all, and the Inquisitor as T1 logistics has two: T2 logistics (Deacon) and T2 stealth bomber (Purifier). As there seems to be no logical reason for this (at least I could not find any with forum & patch notes search), this should be fixed and Tormentor should become the T1 base hull for Purifiers to keep the mapping between T1 and T2 counterparts for empires consistent.