On THD+N, ASR pretty much always provide both % and dB, in dB that is SINAD = 1/(THD+N in %) and expressed in dB, i.e. logarithmic. S&V typically won't give you the output voltage, rendering the number much less meaningful. AH and ASR both typically would specify the output voltage.
Crosstalk: True, he has not been consistent and I think that is because he doesn't think it would be an issue. If he suspect it could be an issue for the dut, I trust he would do it. Obviously we would want him to always do it..
SNR: Gene's would sometimes do it for A weighted (e.g. CX-A5200) and sometimes unweighted (AVR-X3300H). ASR typically measured SNR "unweighted".