Intelligence isn’t so simple. Imagine this hypothetical example, an alien copy of us identical in every way save two: (1) the average IQ is 115 on our scale*, and (2) every biological process from metabolism to synaptic speed is 95% of ours. As a species Homo sapiens been around for 0.3 Megayears. This other species would be 15,000 years behind us in subjective years, which may or may not be something a one standard deviation IQ boost could overcome.
* IQ adjusted only for the subjective speed difference caused by (2)
* IQ adjusted only for the subjective speed difference caused by (2)