Gatchaman

The two storylines are quite different, but there is a stylistic and spiritual link to these titles. They are both contemporary to one another (early/mid 1990's) and are also "facelifts" to older franchises as a retelling or in-universe sequel. But what really strikes a similar is the design and animation of the Phoenix to the YF-21, they could have been designed by the same animators! The areal flight scenes also feel similar as well with lots of excellent explosion and armament effects.  

Both anime are 1990's OVA reboots of classic Tatsuonoko Production anime from the 1970's. Both OVA's give these two classic anime superheroes from the 1970's a more modern and darker feel for the 1990's audience. Both anime are set in the near future with a powerful evil leader that is threatening to take over the planet and it's up to a superhero with a white spandex uniform and helmet to save the day. Both are action-packed anime and are very entertaining to watch. If you like one, you will enjoy the other.