Why are “capacity restrictions” being used to underpredict Doomsday and not Dune 3?

I keep hearing how “capacity restrictions” guarantees Doomsday will open less than BNd or not even reach 300M.

But why doesn’t this also apply to Dune 3? Dune 3 won’t have the non IMAX PLFs of Dune 2 and will likely get far less regular showtimes than Doomsday, yet I see people predicting a 100M opening for Dune 3. Is this just a wishful thinking type thing?