Let's put this in perspective, as noted Talisman and Dr.Strange are pretty much equals. Currently they both have been weakened from their uber classic levels so were unsure where they are at powerwise. Either way I suspect they remain close as they once were
Then Shaman and Brother Voodoo is such a large powergap between them. Shaman is leeps and bounds superior, I would even suspect their fight would be quite short and then you have Shaman and Talisman working together against Strange and I have no doubt they probably would succeed.