Statistics collection recommendations – Teradata 14.0 - comment by mani.atkuri

Hi Carrie,
In our environment, before applying compression we are dropping statistics and after applying compression using alter on the table we are recollecting the statistics.
However this is a time /resource consuming process to recollect statistics on huge data.
so instead of recollecting can we do copy stats like below after applying compression
collect stats on table a from table b;
Is there any difference in recollecting Vs Copying statistics?
Thanks,
Mani