Even without counting options from M+ its still better.
Read what I said fully.
Except M+ loot is not 16 ilvls behind (technically with that gear scaling its more like 20 ilvls now). But just 10. And still most loot drops are best from raid.
At the start? 90% of M raiders will go for at least 2 options.
And the thing is. Even if you participate as M+ player in raids then best you could go for is heroic.
Trying to main M+ will get you stuck forever in limbo, unable to progress.