A tier tournaments

why does NA's, BR's, KR's, JP's and South Asia's VCL is considered A tier tournaments by liquipedia and the rest of other VCL is considered B? like there's no A tier VCL on EU for example

https://liquipedia.net/valorant/A-Tier_Tournaments
https://liquipedia.net/valorant/B-Tier_Tournaments

all of EU VCLs are considered B tier. is it because of the prizepool? or level of play?
also what makes a tournament A tier and what's the difference between A tier and B tier?
or is this just depends on the editor who made those pages?

Read this

kbkdark [#2]

Read this

oh so it's prizepool? gotcha
make sense ig

hanafuuji [#3]

oh so it's prizepool? gotcha
make sense ig

I mean... for me it's kinda weird looking only for prizepool, the level of the teams competing would matter more, but ok

prizepool same as in CS