It does not substantiate that i am not a good demo. I do admit that while i like playing demo, i am not the best demo, however: Any classes and race combinations my friends and other people have tried against this "strategy" were unsuccesfull. You see, the orb in almost every case simply amplifies the users kdr. Every orb user i have met so far was unable to do anything without their precious orb. The difficulty with this strategy on orange_x3 is that the open terrain allows any orb user to slow down any incoming targets. In the case of demo it doesnt matter if you destroy the sentry or not, because no matter if you hit the engi or the sentry both are just distractions. As anderson tends to place the sentries at spawn if he can, the entire opposite team is slowed at that last point, so the team with him can move up to their enemies last point. If you attempt to attack either him or his sentry his entire team is there to "assist" him as he has bottled his enemies in their own base. Once again the orb then allows him to leave any attackers with either his sentry or his "team".
As the war3source server of this network does not apply limitations to the use of orb on certain classes and the orb applies to both the sentry and the shooter it simply IS overpowered.
Btw.: If we have regenerating metal and the Mini-Sentry can be deployed almost instantaniously, why does it still have a gameME multiplicator of 1.0? (Comparison: Sentry 0.8)