Suspended
Of course it'll be irrelevant going forward because of 1070 unavailabilityThe 1070 wont be on sale soon so it is rather irrelevant. The 2070 is the successor to the 1070, that still have 8GB. The predecessor to the 1660Ti is the 1660 which had the same 6GB.
Used to be the new 6o was faster than last gens 70 with at least the same spec.
Although my 2070 is generally faster than my 1070, in some cases, ie Hitman-the 2070 is about a pubic hair faster than my 1070.