This fight? Again?
There's already a thread for this out there... the only difference being her not having the lasso in this one...
"Standard" WW, with her Bracers/Aegis Effect (which can block powerful sound, as the scan in the other thread showed her crossing them and blocking a scream from Silver Swan), would be expected to win (stomp? NO... but generally at least get the majority 6/10). She's much stronger than him, much faster, and a much better fighter. Speed blitz isn't a given, as she's more finesse-based than raw speed-based as her "default" go-to, but she can *totally* make with the ultra-fast attacks when she perceives it necessary (as her most recent fight with Power Girl demonstrated, when Diana crossed hundreds of miles in a matter of seconds to counter-attack PG after PG punched her into Canada from D.C., and got the drop on PG in the process).
BB can definitely get his share, though, as one un-deflected scream can send Diana reeling and give him the win; however, her reflexes and power make such wins less expected than with most others, via her Bracers.
Ironically, her not having the lasso in this isn't the real factor -- the real question is: Can she win without her Bracers? (Even if she has the lasso, which can subdue him in an instant, it isn't a given that she would have the auto-drop, as such, and her resistance without the Bracers is dubious in this context).