Actually even in striking arts things are not in your favour
when it's more then 1 on 1, and of course before you want to run
must learn to crawl first... no point worrying about 10 people
attacking you when you dun even know how to handle one guy grabbing
you except to strike at him when it's easier to break his arm in
one move, control him, and use him as a shield.
But yeah, standup is better for multiple opponents, but the idea
is, unless you have no choice, never fight multiple opponents, just
RUN!
Once again, depends on how creative you are... I certainly won't go
all ne-waza if i have to face more then one guy, but I'll certainly
use my grappling knowledge if it's relevant.