Mmh, not really. Having tried the other way round (attacking with 6 or 7 rogues and one unit), my attacking rogues get fired at (and converted into a proper unit) first by the other player's DA. So, I often win, however do not plunder.Having one Rocket Troop in your DA helps with that.
And Galata Tower gives at least a small percentage chance of fending off the plunderer. Saying that, if a player is attacked (and breached), say, 10 times a day, then Galata really stops to work, as it only fends of up to two attempts (with varying percentages). So, really, everybody wins.