Months ago, I said the ideal situation is for this film to do well, but not too well.
700M range would guarantee a solo Superman sequel. I didn't want this to do higher, or Gunn would just go full-Gunn with this universe, without some restraint.
Based on WB's history, this is where I think the tiers for success are;
500M Range WW - The DCU continues. Budgets are kept tighter by Zazzy. Less risk. More reliance on Batman and Batman-adjacent characters to keep the DCU afloat. No Superman sequel.
600M Range WW - Man of Steel territory (and MOS had an 11% ROI theatrically, which is not good). The DCU continues as planned, but a Superman solo sequel is not a priority. It might get pushed off till after some teamup films, or remain in development hell. They may announce it, like they did for the Superman Returns sequel, but there probably won't be much immediate movement on it. Gunn will write and direct other projects outside of Superman.
700M Range WW - WB/Zazzy will push for a solo Superman sequel in the near future. Investors happy, executives happy.
Grace at BeyondTheTrailer is saying the same. We'll see how things play out.