Special summon Junk Forward (-1)
Normal summon Junk Synchron (-1)
Revives Speed Warrior from the graveyard (+0)
Synchro summon Junk Destroyer
Destroys 2 set spell/traps on your opponent's field using Junk Destroyer's effect (+2)
Attacks and destroys a monster using Junk Destroyer (+1)
In conclusion, you get a +1, so your argument is invalid.