Both Republicans and Democrats hold disproportionately wrong opinions about facts when faced with ideologically inconvenient information. Such is the human condition. However, my point was that Republicans are generally better informed than Democrats.
And my point is that who is 'better informed' depends strongly on the questions being asked. This is not necessarily indicative of bias on the part of the questioner, but also simply what is in the news at the time. There's a lot of literature on this effect.