I worked closely with Allen on the design of his Legacy. I've also heard others say that it is nothing more than a Genesis as well. Let me please add some information as my friend Allen is too much of a gentleman to say much on this subject.
At the time I was contacted to help with the CAD work, Allen and I were living about 2000 miles apart, though we knew each other well from my years living in the midwest. Allen and I spent literally hours on the phone, and internet consulting, and working on the Legacy.
As Allen mentioned above the Genesis influence occurred with his earlier designs, and it's true that the base inspiration was his larger Buccaneer design. The Legacy came about because the earlier kit maker of the Bucaneers would not release the design to another kit maker after his CL kit making was discontinued, and he moved on to RC.
I have an original Bucaneer kit and it was used early to begin the Legacy design, but much was changed.
The nose legnth was altered to accept the St-60 and it's fuel tank. This changed the nose moment. The wing was changed to use a NACA 4 digit airfoil, at about 20% I believe, with it's blunter leading edge compared to the Bucaneer. The wing was made larger. The tail moment was legnthened. The stab and elevator were enlarged to become a larger percentage of the wing area, and the percentage of stab to elevator was changed from 50-50%, to 60-40%.
The percentage of flap to wing was modified slightly.
The signature truss style bulkheads were incorporated to stiffen the aft fuselage.
Allens style of removable tail wheel was incorporated.
These are a lot of changes that he made to still call it a Genesis, even though that's a very favorble design to be compared with.
Now all the above comes from my memory, and though I believe it to be accurate, with increasing age I have found small details sometime elude me.