Star Wars Episode VII
will have no impact on Star Trek Into Darkness
but I think it could
have an impact on Star Trek XIII
. "Could" being the operative word.
Part of the success of Star Trek's reboot was to make it more like Star Wars. Now that Star Wars is coming back, Star Trek will look like the old toy and there will
be a comparison. BUT
, Star Trek will be established with two out of three movies already out. There might not be an affect on its box office. If ST XIII underperforms, or is critically panned, it's just as likely to be blamed on being a "Part 3" as it would be to suffering in comparison to Star Wars.
After ST XIII, Star Trek's future was already wide open to begin with. Star Wars will only provide them with a compass. ST will likely zig where SW zags to avoid looking like an immitation and to better set itself apart to stand on its own.