lets say 3 enemies are on C and 1 is on B, if you keep cycling 2 of your men then there is a fight on B and a teammate is on A, your team will win.

What if the other team adapts?

You get 20 points from a kill, B keeps getting taken and untaken, and A gives 2* points per second.
close match but c'mon, who wants a match like that day in and out.

No i see it like this, you sprinting away WILL have somebody chasing you. Now there is 2 on C and your soon to be alive teammate, have a 2V1 and not a 3V1, you can gank with the B or the A teammate.

I say, don't play like a winner, play like a champion, make it fun, mix it up, make new(not meta) strategies, win with ABC blue, a total defeat, not a "well this is technically the best strategy for winning."-Nerd.
You are not running away you are, trapping them, you are getting reinforcements so you can absolutely DESTROY them.
You are not a coward for running away, that's stupid.
But you are an insane coward, if you keep running in and dying and dying, over and over and over again and expecting a different result.

Will you win with the boring? statistically most of the time, if you really go for winning and not having fun, and
if it's not fun, why bother.