I see what you mean, and I think going by your interpretation of round (i.e. any number of games after which players get eliminated) you’re right.
Also, given the verbiage around must include an elimination format, I think it’s probably the correct interpretation.
I think it’s possible to argue, though, that it’s not actually one elimination format, but two separate stages of a 3-stage tournament, with the last game being the finals. In that case, the games should at least count full MGP up to a TGP of 100%.