No. Some overpowered devil fruits are nerfed. Kizaru for example can't go at the speed of light without going into his mode which takes time, which would make him a defenceless little girl if he were to do that against strong people at his level.
he can't just move at the speed of light, he can travel at the speed but he needs to charge up first and pick a path and taht can be stopped as seen with Rayleigh
and his lasers are no more a reason to be god-like than Fujitoras meteors and actually, far inferior to Gura Quakes