I will say that he mentions it's fine for maleShep. I tend to disagree, following the same processes. Certainly the default male Shep hasn't had any issues I can discern. Nevertheless, this video really shows the differences between what a face code actually IS in each game.
This particular issue can be explained by the differences in slider values in ME3. Clarian, on the Bioware Social Forums, elaborates this really well. He makes the example that the minimum value for Cheek Gaunt in ME2 is substantially different to ME3. Once again, if every slider is like this, entropy rolls in and you get the effect StMalk is describing.
I think it's important to highlight this issue, since this is an example of how every importing player, ME1 or ME2 starters regardless, are affected. "Some" players don't have the issue. "All" players are affected it's just "some" are going to the forums and bringing it to the developers attention.
For the discussion on ME2 to ME3 importing see here.