The one performance point we have for IceLake is
https://browser.geekbench.com/v4/cpu/10445533
and this is distincly unimpressive. Ice Lake looks like exactly what you would expect from the name --- a slightly tweaked Skylake targeting a new process, NOT a new micro-architecture.
Now it's possible that this GB4 submission is fake or otherwise very misleading. (God knows there are plenty of such GB4 submissions.) But I think the naming makes it clear that Ice Lake was ALWAYS meant to be nothing more than a slight tweak, no different from Sandy Bridge->Ivy Bridge or Haswell->Broadwell. Pinning your hopes on it as some great leap forward seems likely to end in major disappointment...