stats in battle

Im having problems seeing a big difference in my dmg and acc vs mobs in battle. It seems like the way to go is to have a better weapon than stats. An example of this is...
The other day while playing on my lancer I had a friend of mine who is playing gld was doing more dmg to every mob. We have the same physical level my str and dex are 30+ points higher than his, the only difference was weapons my weapon being level 39 and his being level 42.

Any helpful comments welcomed.. if you are just trolling plz go somewhere else.