No it doesn't, that's your opinion. Your opinion is not fact.
Actually it's not opinion, Fallout 1 is Fallout. That's the fact. It's the true original which started the series to begin with. If it's the best "game" is totally debatable but if it's the
best "Fallout game" most true Fallout game is not up for discussion since it is the big bang of the fallout universe.
Without it, none of the others would ever have been made.
Hmm I guess calling it the most true Fallout game would be better though...
So I revise my statement.
Fallout 3 is not the most true Fallout game.
Fallout 1 is.
A sequel is the next instalment in a series, just because you didn't like it doesn't mean its not a sequel !!!! I mean what the hell? Are you serious!?
Definition time!
Sequel:
1. Something that follows; a continuation.
2. A literary, dramatic, or cinematic work whose narrative continues that of a preexisting work.
3. A result or consequence. See Synonyms at effect.
*
1. anything that follows from something else; development
2. a consequence or result
3. a novel, play, etc., that continues a previously related story
Hmm, Enclave?
I mean what the hell? Are you serious!?
I love being serious.