Gatto has very long arms (i suspect her reach is closer to 72" than the listed 69") and has shown glimpses of being able to weaponize that reach which is her best path to victory here imo. We saw in Gatto's last fight that she moves well laterally so imo she could quite easily win a low volume 15 minute kickboxing match simply by establishing her jab and busting up the face of Dudakova; sticking and moving. We also saw in Dudakova's last fight her footwork is not very good so she likely will not have an answer for Gatto's lateral movement which will inhibit her ability to cut off the cage, land shots of her own, and initiate grappling once she gets frustrated when she cannot land clean.
Dudakova though definitely has better takedowns and control. Gatto does not seem to have much of a getup game as well so if she is taken down that may just be the round right there and we have seen her be content to play BJJ off her back.
Dudakova definitely has a chance through her grappling, which is why I could never get anywhere near capping Gatto at -250, but she should win.