If you think that Sage/Sorc healers do not have force issues then you've been in games where the sage/sorc has ~zero pressure on him/her.; can't speak to the commando since I do not have one.
Scoundrels/Operatives have no energy issues, healing on one is a joke, but even then burst dps can overcome their healing as long as you are not trying to focus them down while they are being guarded or cross-healed.
Healing is strong, but BURST DPS > BURST HEALING... the ability to heal aoe/pressure damage inflates healing numbers to make it seem like healing is outdistancing dps, ,but that is simply not the case.
Now, a more serious issue is the amount of horrible players who can barely scratch 200-300k damage in a long match, much less utilize interrupts/cc/and focus fire (even in pugs this is fairly simple, just set your focus target and use the acquire focus target keybind..).
the only WZ that is abit tricky in that behaviour is the alderan/civil war WZ as it resets your focus target when ever riding one of those cycles.