Basic math time guys
1.- By the end of its first month (31 days), Suicide Squad had a domestic gross of $297,327,572. It ended up making $325,100,054. By this point, Suicide Squad had 27,772,482 left in the tank as of domestic gross.
2.- If Wonder Woman had the same run from this point on out, it'd end up at 374,416,957, just under GotG2.
>b-but who c-cares about domestic lol
Wonder Woman has a perfect 50/50 domestic/overseas split so far (without Japan) so the total worldwide gross would be 748,833,914
3.- Now this is not realistic, Suicide Squad at this point was all but dead. Wonder Woman is performing notably better than Suicide Squad so it's safe to expect that it'll make much more. On their fifth weekends, Wonder Woman made $16,100,000 (estimated) and Suicide Squad $9,910,256. That's a 62.46% more. By simply applying this parameter to Suicide Squad's late gross, we get this estimation: Wonder Woman is going to make $45,119,174 millions more in the United States, leaving her total domestic run at $391,763,649, above Deadpool and GotG2, just 16 million shy of Civil War. Worldwide that's 783,527,298.
Considering the budget, the moderate marketing (so small that feminist raged about it) and the absurdly hard competition, we can safely say that this numbers place this flick among the most succesful capeshit ever.