Now take it to useful maps, like sf180+.. I wonder if the epic will remain to be a good option. sf133 and lower isn't the maps to go after lvl 140 that it should take 2 to 4 days to reach.
"epic weapon" in this video simply means "low damage". In sf180, It would be comparing "mythic" with "ancient". the key point is that you need to pick a weapon that takes 2 or 3 hits to kill a mob, in stead of one-shot for the sf map you are in.