Yea, it doesn't work that way though. Resource costs across all classes are for the most part pretty proportional. Keep a sorc in a fight with his bubble up for more than 20 seconds, watch him be at 0 Force, or damn well near it.
Of course, if they are lolightning hybrid, they pretty much will never run out of Force unless they try to heal, but they are even more squishy and lack any sort of good control. So you take the bad with the good.