not entirely, some moves have the ability to become competitive by how they combo with other moves.
the rev hammer arm/shadow sneak is an example of this. we have one obviously competitive move (hammer arm), and another that is only arguable competitive (shadow sneak), and yet together they make an amazing combo on it.
another possibility for this situation include having move combos that give too great a coverage.
Unfortunately, 'competitive move combos' are not covered under X-Act's rules, only 'competitive moves'.
On the other hand, we could still solve that problem by discussing moves thoroughly in the move discussion thread so that voters have a context when they move on competitive moves, so that they are aware of potential combos. On the other hand, I fear that the use of theorymon in this instance will only overhype things that are not broken.
A radical shift in process
Considering that most pokemon really tend to have a few main movesets and perhaps a list of options (ex. Heracross Stone Edge, Earthquake, Megahorn, (Swords Dance etc.), it might be a better idea to have a move discussion where we plan out what the likely competitive moveset for the CAP would be and then plan moves accordingly.