That’s possibly true. How well rested you are, eating frequency, what you’re eating, how much you’re eating and probably a bunch of different factors can influence your strength at a given day, and everyone probably reacts a bit differently to each of those things.
With that being said, I personally don’t really feel any strength difference between OMAD and eating throughout the day if I’m at a deficit though. If you’re doing this for the first time, I imagine that it’s natural to feel weaker until you’re fully used to it.