Does 3200MT/s CL16 perform the same as 3600MT/s CL18 when clock limited and timing tweaked?

[Vasllo]

So, my motherboard only allows for 2666MT/s, so I tweak the timings. My current kit is 3200MT/s CL16 and I'm running at 2666MT/s CL13, with tweaked secondary timings as well. In this scenario, does it make a difference between the two specs in the title? Like one would be able to achieve CL12 and the other CL13 in my settings, or would it all be the same, since they both have the same real-time latency?

[RONOTHAN##]

It would just come down to what memory ICs are present on each of those sticks. You can get kits that will not do below CL16 no matter what, and you can get kits that will scale timings down very low. Realistically though the timing differences aren't gonna be enough to justify getting one over another, even if it was a bigger difference with something like B die it's not gonna be something you actually notice compared to just getting a new motherboard instead.