Meet the Veggienauts!

[Harti]

Ya I hear what you're saying, I've found it hard to pull off also, but I spawned significantly more Snipers to get rid of approaching Soldiers than I usually would.
Spawning and moving a Runner to kill my Sniper will leave you at +1, but don't forget that the Sniper one-shot a unit before - usually a Soldier - which was more expensive, leaving ME at +1~3 instead.

The Sniper-Runner match-up will be a tie, yeah. But once I begin buffing the Snipers (which is what you want to do with Sniper turtling anyway), you're going to have a hard time keeping up I guess.