My paladin - 2p from raid and 1p from M+ vault. Same goes for my dh and boomie.
Organized content giving out the good loot faster is a better design than m+ giving it in equal speed. One is spammable, the other not. M+ is avaible at any point, far less required people for it and guess what, it isn’t weekly locked. Giving a tier would be too much and make raids irrelevant.
In the end of the day, I have 2 278 Shoulder pieces and I ain’t killing Lords Mythic the next 3 months. The vault giving tier is imo great and in any case, in 2 weeks you get to craft tier.
TLDR Raids gives overall more tier but is weekly locked and low ilvl unless you are a top 100 player, M+ and PVP give higher ilvl piece for anyone that doesn’t do Mythic but it’s limited per 1 max weekly and it doesn’t matter since you can freely craft them soon.