Stellar-mass Tully-Fisher (analogue) relation for ETGs at z = 0 from Davis et al. (2016) compared with the positions of our starburst galaxies at z ≈ 4.5. In the local ETGs, the rotational speed is derived from the inner CO discs, while in our galaxies it is obtained from the [C II] line. The empty symbols show the positions of our galaxies based on the observed stellar mass, while the filled symbols show their positions assuming that all the observed gas mass is converted into stars.