As I discovered with my 7-port, 60W charging hub from Plugable -- pop it open and look at how the power is distributed.
On the Plugable, it takes 12vdc in and has 3 buck regulators taking that down to 5v for the USB plugs. That said... 1 regulator feeds ports 1 & 2, the 2nd regulator feeds ports 3 & 4, the 3rd feeds ports 5-7. See where this is going?
Given that you can only use 3 ports, do you still need 60W or is the 25W unit acceptable. I would be using the Pluggable 7 port hub to run a couple 2PAC sticks and I can order 2 Pluggable 25W units for the price of the 60W unit.
CreativeReef
Not sure anyone has cracked open the smaller 25W unit to see how many voltage regulators it has. The 60w one has 3 shared between 2 ports, 2 ports, 3 ports so we know how it works. The 25w may only have 1 regulator that splits up the current between all ports which could mean drops for the 2Pac sticks if running more than 1. All depends on how they are set up.