IQ is not subjective. The word intelligence is subjective. You can't say something like Asians in general are more intelligent then white people but you can say Asians in general have higher IQ.
So a better way to talk about this topic is to ignore the word "intelligence" all together. Just talk about how and why Asians have higher IQ.
That's only because the word "intelligence" is subjective and ill defined. The problem is our usage of the word intelligence as a primary entity. Instead iq should be the primary benchmark for mental performance and intelligence is just one subjective aspect of it.
So a better way to talk about this topic is to ignore the word "intelligence" all together. Just talk about how and why Asians have higher IQ.