If we re-call all the TOS enemies that Kirk & Crew encountered - they were all defeated within 1-2 episodes with almost no implication of complete doom for Earth/Starfleet otherwise.
A bit of team work, use of wits, blue phaser beams or even some kirk-fu subdued any threat, land or in space.
In this alternative timeline, what could possibly give the mysterious TOS era villain such chops to be a bigger threat than the future Romulan Nero posed?
And why wasn't such a villain, device, power not encountered and threatened Earth in the original TOS time line?
A bit of team work, use of wits, blue phaser beams or even some kirk-fu subdued any threat, land or in space.
In this alternative timeline, what could possibly give the mysterious TOS era villain such chops to be a bigger threat than the future Romulan Nero posed?
And why wasn't such a villain, device, power not encountered and threatened Earth in the original TOS time line?