I have to assume you are in fact a very bad DE player or plain lieing with that statement.
Any DE player worth the air they breath would realize how easy it is to stun/shaken a grand total of 6 vehicle that have to sit totally still and fire directly (and therefore be deployed from start where they intend to sit for the rest of the game).
I evaluate your imba-broke-***-list would have a 0% chance of winning against mech-de and only a 75% chance of killing any model to begin with if said DE list was used by a good player (did I say that stunlocking 6 vehicles is laughably easy yet?).