According to dimarzios website the air classic has an output of 226 where the area 67's have an output of 120. Thats a pretty drastic difference. A lot of that can be compensated with pickup height, but personly i think the output is a little too far away. If the singles were more like 175 output that might be a bit better.
The air classic is a nice well rounded pickup for output and tone... where the area 67's are very bright according to the tone scale which is fine if that's what you are looking for. I mean, if it's going in an alder or ash body that may be a bit thin sounding.