a Question for 'Fair Deal Phil'

According to Fair Deal Phil,

One of the truly offensive Spectator articles claimed black people have smaller brains and are less intelligent. It claimed:

Orientals ... have larger brains and higher IQ scores. Blacks are at the other pole.

This is a classic example of partisan slander. Phil has objected to a falsifiable claim without providing evidence. One of two things has happened:

• Phil is aware of the evidence that proves this Spectator article wrong, but is too lazy to provide it
• Phil is not aware of any evidence on this issue, but doesn't view this as a scientific debate

Either way, it presents all that is wrong with political debate. I left a comment, but don't hold up much hope for a rational response...