Need Suggestion and Opinion TMCAS vs. O365 ATP P1

Hi Security, Privacy & Compliance,

Just wanted to check for your expertise and advise.

Our Tenant has license on each users O365 ATP P1 and we have subscription on Trend Micro Cloud App Security. Does ATP P1 works the same as TMCAS? As TMCAS is costly, should we drop them as ATP P1 works the same/or does the same in protecting the tenant from malicious emails ?

Thanks in advance,

Mark