That statement is a fact (note the word 'can') and therefore not controversial at all (unless you want to claim real time combat always works better).
With a party, real time combat can force you to control a particular character to avoid problems with AI (an archer running around drawing nearby opponents into a fight, or a mage wasting high mana spells on weak opponents) or do a lot of pausing to micro-manage. The babysitting required in the first large fight in the BG 2 demo made me pass on the game. I've since bought it in a GOG sale, but haven't gotten around to giving it another try.
There are lots of ways to do both real time and turn based combat well or poorly, and lots of differences of opinion on where exactly a particular system falls on that scale. Personally, I don't have a strong preference for either (the details of how the combat system is implemented would be the determining factor, but just whether it was real time or turn based).
