No, Captain level is T4, all the Admiral ships are T5. Some people start counting with 0, some with 1, I think there is some confussion since Cryptic people said they have a slightly different internal Tier system.

There is no distinction between the Rear Admiral ships and the Vice Admiral Retrofits necessary.

Yea... sorry about that. Was supposed to say T1, but I geuss I hit 0 on the numeral-keyboard...

The players from the beginning referred the various Tiers of ships as T1, T2, etc. The confusion around Tier 0 vs Tier 1, etc. is that the devs internally refer to the ships tiers as 0-4. Your starter Miranda class iter a Tier 0, the Lt Commander ships are Tier 1 and so forth. The confusion has come about because the devs speaking publicly about the ship tiers using their internal numbering.

Most, if not all , devs nowadays use the player base 1 Tier numbering scheme. But the original Base 0 Tier numbering lives on in use by unknowing players.

I wouldnt say "unknowing", I still use the zero,like you said, they have been talking about internally they use a zero tier, but nothing said officially or stated specifically (at least that I can find) "Starter ships are T1" I would say this is ample enough argument for the zero tier system....I just include the refits as T5.