Honestly, comparing the strength of anime Goku and manga Goku is tricky. Both versions have their unique strengths and challenges depicted differently, making it hard to make a clear-cut comparison.
In general, it's a bit of a toss-up. The strength of Manga Goku and Anime Goku can vary depending on the specific arcs and battles. Sometimes, it might seem like one is stronger in a particular situation, but that could change in another.
It could be really exciting. Goku's super strength and combat skills would be a great addition to the Gears of War universe. He could use his Ki blasts against the Locust horde, and his ability to fly would give him an edge in battles. Maybe he'd team up with Marcus Fenix and they'd take on the toughest enemies together.
The Locust Queen could still be the main antagonist. Goku would see her as a great threat to the people of Sera. His sense of justice would drive him to take her on directly.
Well, in some fanfics, Black Goku might be depicted in a scenario where he encounters a strange or magical milk. It could be part of a plot where the milk has some special power that either helps or hinders him. However, these kinds of fanfics can be quite rare.