Of course, the above does not take into account congressional districts which vote for congressmen and presidents of opposite parties.There were a lot of them this election. That is why I asked. If presidential electors were selected in every state the way Maine and Nebraska do now, would it have changed the result this year? I honestly do not know, and your post doesn't answer it.
No, but it
does tell you that there would have had to been a NET 281-268 = 13
net seats which would have had to have elected GOP congressman and still voted for Obama. Considering that is nearly
double the number of house seats which flipped nationwide, I think it unlikely.
Dave Leip's presidential atlas might eventually post the district information. They have done so in the past.