To a point. These 100 dollar tail servos, even on a high frame rate governor and working that throttle arm back and forth faster than an internal combustion engine can respond to throttle changes. Also keep in mind, even with identical speed servos on the pitch and throttle, the throttle will always be faster because it doesnt have nearly as far to move (usually 50 to 100 percent, back and forth in that area) while the collective is moving end to end. Also throw in the fact that the collective servo has a constant load on it wheras the throttle barrel presents no appreciable load, there comes a point where servo speed on the throttle becomes moot.

In practice, anything at or near .2sec / 60 degrees is fine, anything over that and no matter how fast you are moving that arm back and forth you arent going to get any benefit to in flight.