Most of the early search radars used an A-scope display that required an experienced operator to finesse out the graphic image of the battlefield. The SG radar had the now-familiar PPI scope which IS a graphic display of the battlefield. Helena would forward what they thought was critical, which was passed to the "talker", then transmitted to San Francisco's talker and then reported to the bridge. Scott's questions had to be relayed back through that whole chain before answers could be determined and then relayed back through the whole chain again. In combat, THAT TAKES WAY TOO MUCH TIME. Yet even Scott still did not move to a flagship with SG radar. At First Guadalcanal, he would have been subject to the same fatal comm delays of the SG picture as was Callaghan. Therefore, other "awarenesses" aside, Scott would not have been able to react in a more timely manner than Callaghan. The result would have been just as lethal to the US forces.
The ships that did the best, Helena and the two Fletchers, had SG radar that their respective commanders could use REAL TIME, and that is how they successfully navigated through the "bar room brawl".