A hint when playing online when super weapons ARE allowed is to build a black lotus as quickly as possible and get it into the enemies base. This tactic works, as usually people do not tend to build defense internally.
Another factor to consider is that a black lotus can out run a patriot missile system. And can therefore run straight past it.

When you are in the base locate the enemy super weapon, and wait for the timer to reach 0:10. The simply capture the SW and use it against them.

The enemy first thinks they have the upper hand by using a SW, but then suddenly lose it and have it used against them.

Its a very rewarding technique and must be very embarrassing for the enemy Commander