Originally Posted by Lycantt
Well what do you think it actually works better for the team? I mean, a really pure AD Shaco can easily clean up all the enemy squishes
It really depends on the team.
If they can stall for you while you split push towers down, a damage focused Shaco can work well. If they have strong initiation, you may be able to (cautiously) enter teamfights and pick off low health squishies fast.
If they are going to need a 5th member in the fight proper, then you'd be better off with a bruiser setup. Often with pugs it is going to be the latter, but it really depends on your team comp a lot. You should never be fixed on one specific build, as it won't always fit what your team can use. No sense charging off to split push and be a glass cannon if the enemy team can push your team off your towers while you're gone, right?