Both the courses are good in their own way.
BAMS deals with ayurvedic medicine so after this you can get a job in government hospitals, private ayurvedic medicine companies, spa and can also run your own clinic whereas after doing physiotherapy you can get a job in private and government hospitals. Physiotherapists are in great demand in sports field. You can also practice on your own.
Well its solely depends on your interest that which one you would like to go for but I will recommend you BAMS as best resource to earn when compared to BPT.