This has to have context. If the context of a plan, that could be the very reason it was removed and replaced. Comparing the two similar workouts outside of a plan, what is to say one is better than the other.
There is no such thing as one “most effective workout” for a particular purpose. Otherwise, the library would have one workout for endurance, one for VO2max, one for sprinting, one for threshold/TT. Or to an even more ridiculous extreme, only one workout for the purpose of cycling