Because the 200 mg arm achieved the primary endpoint, not the 50 & 100 mg arms. Fortunately Phase 2b doesn’t include the 50 & 100 mg arms, but you are welcome to study their subpopulations if you like.
Why give only data for 200mg moderate group?
FUD - Fear, uncertainty and doubt, is generally a strategic attempt to influence perception by disseminating negative and dubious or false information.