Will a FW back into the same spot as a similar sized BP?

I believe the issue those use to backing a TT switching to a 5er there is a difference in the way they react. With a 5er one needs to anticipate and start to straighten out before the 5er gets ahead of you. One just need to understand the differences between the two.
Personally I don't have an issue with backing our 5er, the TV never needs to get too far out of line with 5er or road. Done correctly you don't need to use any more than one lane.