Well, for instnce, both have inverted wings. To the eye, i find it a terrible similarity. Both´s standard and most showed designs are black. (Not like if Black Eagle has a different one anyway). Esthetically, its undeniable that you can place its look closer to an YF23 for modelling sakes.
However, the body of the plane IS totally different, and much more similar to the Hornet, that i agree.