I cheated abit with 2 because I didn't use a tripod, there is still abit of distortion due to the camera being not level, hence you can say I had to correct it about 5% or so. But with 1, it is shot totally upwards, hence it is 100% PSed. I overlay the 2 images and try to make them match through editing. The 2 shots are quite heavily cropped. If you overlay the 2 images on PS and look at them, you'll see the there is a U shaped distortion on the 1st image, it could be due to lens etc or what ever.
My own conclusion is this; it is possible to almost emulate a TS lens, but 1 thing is that while you can correct for the converging verticals, the image will look stumpy. Without a "correct" photo for reference, you don't know how much to elongate the image to compensate for it.